diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/AsyncEnumerable.AsyncOverloads.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/AsyncEnumerable.AsyncOverloads.cs
index 59f03c4c65..b2e93bdf52 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/AsyncEnumerable.AsyncOverloads.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/AsyncEnumerable.AsyncOverloads.cs
@@ -2,8 +2,6 @@
 // The .NET Foundation licenses this file to you under the Apache 2.0 License.
 // See the LICENSE file in the project root for more information. 
 
-#if SUPPORT_FLAT_ASYNC_API
-
 using System.Collections.Generic;
 using System.Threading;
 using System.Threading.Tasks;
@@ -12,206 +10,406 @@ namespace System.Linq
 {
     partial class AsyncEnumerable
     {
-        public static ValueTask<TSource> AggregateAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, TSource, ValueTask<TSource>> accumulator, CancellationToken cancellationToken) => AggregateAwaitAsync<TSource>(source, accumulator, cancellationToken);
-        public static ValueTask<TAccumulate> AggregateAsync<TSource, TAccumulate>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, ValueTask<TAccumulate>> accumulator, CancellationToken cancellationToken) => AggregateAwaitAsync<TSource, TAccumulate>(source, seed, accumulator, cancellationToken);
-        public static ValueTask<TResult> AggregateAsync<TSource, TAccumulate, TResult>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, ValueTask<TAccumulate>> accumulator, Func<TAccumulate, ValueTask<TResult>> resultSelector, CancellationToken cancellationToken) => AggregateAwaitAsync<TSource, TAccumulate, TResult>(source, seed, accumulator, resultSelector, cancellationToken);
-        public static ValueTask<bool> AllAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => AllAwaitAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<bool> AnyAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => AnyAwaitAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<double> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken) => AverageAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken) => AverageAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken) => AverageAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken) => AverageAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken) => AverageAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken) => AverageAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken) => AverageAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken) => AverageAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken) => AverageAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => AverageAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<int> CountAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => CountAwaitAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<TSource> FirstAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => FirstAwaitAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<TSource> FirstOrDefaultAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => FirstOrDefaultAwaitAsync<TSource>(source, predicate, cancellationToken);
-        public static Task ForEachAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, Task> action, CancellationToken cancellationToken) => ForEachAwaitAsync<TSource>(source, action, cancellationToken);
-        public static Task ForEachAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, Task> action, CancellationToken cancellationToken) => ForEachAwaitAsync<TSource>(source, action, cancellationToken);
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => GroupByAwait<TSource, TKey>(source, keySelector);
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer) => GroupByAwait<TSource, TKey>(source, keySelector, comparer);
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector) => GroupByAwait<TSource, TKey, TElement>(source, keySelector, elementSelector);
-        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, ValueTask<TResult>> resultSelector) => GroupByAwait<TSource, TKey, TResult>(source, keySelector, resultSelector);
-        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, ValueTask<TResult>> resultSelector) => GroupByAwait<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector);
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer) => GroupByAwait<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer);
-        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupByAwait<TSource, TKey, TResult>(source, keySelector, resultSelector, comparer);
-        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupByAwait<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector, comparer);
-        public static IAsyncEnumerable<TResult> GroupJoin<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, ValueTask<TResult>> resultSelector) => GroupJoinAwait<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector);
-        public static IAsyncEnumerable<TResult> GroupJoin<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupJoinAwait<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer);
-        public static IAsyncEnumerable<TResult> Join<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, ValueTask<TResult>> resultSelector) => JoinAwait<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector);
-        public static IAsyncEnumerable<TResult> Join<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => JoinAwait<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer);
-        public static ValueTask<TSource> LastAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LastAwaitAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<TSource> LastOrDefaultAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LastOrDefaultAwaitAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<long> LongCountAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LongCountAwaitAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<long> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken) => MaxAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<long?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken) => MaxAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken) => MaxAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken) => MaxAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken) => MaxAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken) => MaxAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken) => MaxAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => MaxAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<TResult> MaxAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector, CancellationToken cancellationToken) => MaxAwaitAsync<TSource, TResult>(source, selector, cancellationToken);
-        public static ValueTask<int> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken) => MaxAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<int?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken) => MaxAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken) => MinAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken) => MinAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken) => MinAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => MinAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<int> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken) => MinAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<int?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken) => MinAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<long> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken) => MinAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<long?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken) => MinAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken) => MinAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken) => MinAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<TResult> MinAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector, CancellationToken cancellationToken) => MinAwaitAsync<TSource, TResult>(source, selector, cancellationToken);
-        public static IOrderedAsyncEnumerable<TSource> OrderBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => OrderByAwait<TSource, TKey>(source, keySelector);
-        public static IOrderedAsyncEnumerable<TSource> OrderBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => OrderByAwait<TSource, TKey>(source, keySelector, comparer);
-        public static IOrderedAsyncEnumerable<TSource> OrderByDescending<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => OrderByDescendingAwait<TSource, TKey>(source, keySelector);
-        public static IOrderedAsyncEnumerable<TSource> OrderByDescending<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => OrderByDescendingAwait<TSource, TKey>(source, keySelector, comparer);
-        public static IAsyncEnumerable<TResult> Select<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector) => SelectAwait<TSource, TResult>(source, selector);
-        public static IAsyncEnumerable<TResult> Select<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<TResult>> selector) => SelectAwait<TSource, TResult>(source, selector);
-        public static IAsyncEnumerable<TResult> SelectMany<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<IAsyncEnumerable<TResult>>> selector) => SelectManyAwait<TSource, TResult>(source, selector);
-        public static IAsyncEnumerable<TResult> SelectMany<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<IAsyncEnumerable<TResult>>> selector) => SelectManyAwait<TSource, TResult>(source, selector);
-        public static IAsyncEnumerable<TResult> SelectMany<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, ValueTask<TResult>> resultSelector) => SelectManyAwait<TSource, TCollection, TResult>(source, collectionSelector, resultSelector);
-        public static IAsyncEnumerable<TResult> SelectMany<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, ValueTask<TResult>> resultSelector) => SelectManyAwait<TSource, TCollection, TResult>(source, collectionSelector, resultSelector);
-        public static ValueTask<TSource> SingleAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => SingleAwaitAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<TSource> SingleOrDefaultAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => SingleOrDefaultAwaitAsync<TSource>(source, predicate, cancellationToken);
-        public static IAsyncEnumerable<TSource> SkipWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate) => SkipWhileAwait<TSource>(source, predicate);
-        public static IAsyncEnumerable<TSource> SkipWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate) => SkipWhileAwait<TSource>(source, predicate);
-        public static ValueTask<long?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken) => SumAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken) => SumAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken) => SumAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => SumAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<int> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken) => SumAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<long> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken) => SumAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken) => SumAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken) => SumAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken) => SumAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<int?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken) => SumAwaitAsync<TSource>(source, selector, cancellationToken);
-        public static IAsyncEnumerable<TSource> TakeWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate) => TakeWhileAwait<TSource>(source, predicate);
-        public static IAsyncEnumerable<TSource> TakeWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate) => TakeWhileAwait<TSource>(source, predicate);
-        public static IOrderedAsyncEnumerable<TSource> ThenBy<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => ThenByAwait<TSource, TKey>(source, keySelector);
-        public static IOrderedAsyncEnumerable<TSource> ThenBy<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => ThenByAwait<TSource, TKey>(source, keySelector, comparer);
-        public static IOrderedAsyncEnumerable<TSource> ThenByDescending<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => ThenByDescendingAwait<TSource, TKey>(source, keySelector);
-        public static IOrderedAsyncEnumerable<TSource> ThenByDescending<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => ThenByDescendingAwait<TSource, TKey>(source, keySelector, comparer);
-        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, CancellationToken cancellationToken) => ToDictionaryAwaitAsync<TSource, TKey>(source, keySelector, cancellationToken);
-        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToDictionaryAwaitAsync<TSource, TKey>(source, keySelector, comparer, cancellationToken);
-        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken) => ToDictionaryAwaitAsync<TSource, TKey, TElement>(source, keySelector, elementSelector, cancellationToken);
-        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToDictionaryAwaitAsync<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer, cancellationToken);
-        public static ValueTask<ILookup<TKey, TSource>> ToLookupAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, CancellationToken cancellationToken) => ToLookupAwaitAsync<TSource, TKey>(source, keySelector, cancellationToken);
-        public static ValueTask<ILookup<TKey, TElement>> ToLookupAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken) => ToLookupAwaitAsync<TSource, TKey, TElement>(source, keySelector, elementSelector, cancellationToken);
-        public static ValueTask<ILookup<TKey, TSource>> ToLookupAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToLookupAwaitAsync<TSource, TKey>(source, keySelector, comparer, cancellationToken);
-        public static ValueTask<ILookup<TKey, TElement>> ToLookupAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToLookupAwaitAsync<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer, cancellationToken);
-        public static IAsyncEnumerable<TSource> Where<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate) => WhereAwait<TSource>(source, predicate);
-        public static IAsyncEnumerable<TSource> Where<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate) => WhereAwait<TSource>(source, predicate);
-        public static IAsyncEnumerable<TResult> Zip<TFirst, TSecond, TResult>(this IAsyncEnumerable<TFirst> first, IAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, ValueTask<TResult>> selector) => ZipAwait<TFirst, TSecond, TResult>(first, second, selector);
+#if SUPPORT_FLAT_ASYNC_API
+        public static ValueTask<TSource> AggregateAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, TSource, ValueTask<TSource>> accumulator, CancellationToken cancellationToken) => AggregateAwaitAsyncCore<TSource>(source, accumulator, cancellationToken);
+        public static ValueTask<TAccumulate> AggregateAsync<TSource, TAccumulate>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, ValueTask<TAccumulate>> accumulator, CancellationToken cancellationToken) => AggregateAwaitAsyncCore<TSource, TAccumulate>(source, seed, accumulator, cancellationToken);
+        public static ValueTask<TResult> AggregateAsync<TSource, TAccumulate, TResult>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, ValueTask<TAccumulate>> accumulator, Func<TAccumulate, ValueTask<TResult>> resultSelector, CancellationToken cancellationToken) => AggregateAwaitAsyncCore<TSource, TAccumulate, TResult>(source, seed, accumulator, resultSelector, cancellationToken);
+        public static ValueTask<bool> AllAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => AllAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<bool> AnyAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => AnyAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<double?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int> CountAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => CountAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> FirstAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => FirstAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> FirstOrDefaultAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => FirstOrDefaultAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static Task ForEachAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, Task> action, CancellationToken cancellationToken) => ForEachAwaitAsyncCore<TSource>(source, action, cancellationToken);
+        public static Task ForEachAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, Task> action, CancellationToken cancellationToken) => ForEachAwaitAsyncCore<TSource>(source, action, cancellationToken);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => GroupByAwaitCore<TSource, TKey>(source, keySelector);
+        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, ValueTask<TResult>> resultSelector) => GroupByAwaitCore<TSource, TKey, TResult>(source, keySelector, resultSelector);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer) => GroupByAwaitCore<TSource, TKey>(source, keySelector, comparer);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector) => GroupByAwaitCore<TSource, TKey, TElement>(source, keySelector, elementSelector);
+        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitCore<TSource, TKey, TResult>(source, keySelector, resultSelector, comparer);
+        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, ValueTask<TResult>> resultSelector) => GroupByAwaitCore<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer);
+        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitCore<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector, comparer);
+        public static IAsyncEnumerable<TResult> GroupJoin<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, ValueTask<TResult>> resultSelector) => GroupJoinAwaitCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector);
+        public static IAsyncEnumerable<TResult> GroupJoin<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupJoinAwaitCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer);
+        public static IAsyncEnumerable<TResult> Join<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, ValueTask<TResult>> resultSelector) => JoinAwaitCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector);
+        public static IAsyncEnumerable<TResult> Join<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => JoinAwaitCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer);
+        public static ValueTask<TSource> LastAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LastAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> LastOrDefaultAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LastOrDefaultAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<long> LongCountAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LongCountAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<int> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<TResult> MaxAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource, TResult>(source, selector, cancellationToken);
+        public static ValueTask<float> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<TResult> MinAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource, TResult>(source, selector, cancellationToken);
+        public static IOrderedAsyncEnumerable<TSource> OrderBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => OrderByAwaitCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> OrderBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => OrderByAwaitCore<TSource, TKey>(source, keySelector, comparer);
+        public static IOrderedAsyncEnumerable<TSource> OrderByDescending<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => OrderByDescendingAwaitCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> OrderByDescending<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => OrderByDescendingAwaitCore<TSource, TKey>(source, keySelector, comparer);
+        public static IAsyncEnumerable<TResult> Select<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector) => SelectAwaitCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> Select<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<TResult>> selector) => SelectAwaitCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectMany<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<IAsyncEnumerable<TResult>>> selector) => SelectManyAwaitCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectMany<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<IAsyncEnumerable<TResult>>> selector) => SelectManyAwaitCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectMany<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, ValueTask<TResult>> resultSelector) => SelectManyAwaitCore<TSource, TCollection, TResult>(source, collectionSelector, resultSelector);
+        public static IAsyncEnumerable<TResult> SelectMany<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, ValueTask<TResult>> resultSelector) => SelectManyAwaitCore<TSource, TCollection, TResult>(source, collectionSelector, resultSelector);
+        public static ValueTask<TSource> SingleAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => SingleAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> SingleOrDefaultAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => SingleOrDefaultAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static IAsyncEnumerable<TSource> SkipWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate) => SkipWhileAwaitCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TSource> SkipWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate) => SkipWhileAwaitCore<TSource>(source, predicate);
+        public static ValueTask<double> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static IAsyncEnumerable<TSource> TakeWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate) => TakeWhileAwaitCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TSource> TakeWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate) => TakeWhileAwaitCore<TSource>(source, predicate);
+        public static IOrderedAsyncEnumerable<TSource> ThenBy<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => ThenByAwaitCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> ThenBy<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => ThenByAwaitCore<TSource, TKey>(source, keySelector, comparer);
+        public static IOrderedAsyncEnumerable<TSource> ThenByDescending<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => ThenByDescendingAwaitCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> ThenByDescending<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => ThenByDescendingAwaitCore<TSource, TKey>(source, keySelector, comparer);
+        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, CancellationToken cancellationToken) => ToDictionaryAwaitAsyncCore<TSource, TKey>(source, keySelector, cancellationToken);
+        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToDictionaryAwaitAsyncCore<TSource, TKey>(source, keySelector, comparer, cancellationToken);
+        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken) => ToDictionaryAwaitAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, cancellationToken);
+        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToDictionaryAwaitAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer, cancellationToken);
+        public static ValueTask<ILookup<TKey, TSource>> ToLookupAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, CancellationToken cancellationToken) => ToLookupAwaitAsyncCore<TSource, TKey>(source, keySelector, cancellationToken);
+        public static ValueTask<ILookup<TKey, TSource>> ToLookupAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToLookupAwaitAsyncCore<TSource, TKey>(source, keySelector, comparer, cancellationToken);
+        public static ValueTask<ILookup<TKey, TElement>> ToLookupAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken) => ToLookupAwaitAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, cancellationToken);
+        public static ValueTask<ILookup<TKey, TElement>> ToLookupAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToLookupAwaitAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer, cancellationToken);
+        public static IAsyncEnumerable<TSource> Where<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate) => WhereAwaitCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TSource> Where<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate) => WhereAwaitCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TResult> Zip<TFirst, TSecond, TResult>(this IAsyncEnumerable<TFirst> first, IAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, ValueTask<TResult>> selector) => ZipAwaitCore<TFirst, TSecond, TResult>(first, second, selector);
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<TSource> AggregateAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, TSource, CancellationToken, ValueTask<TSource>> accumulator, CancellationToken cancellationToken) => AggregateAwaitWithCancellationAsync<TSource>(source, accumulator, cancellationToken);
-        public static ValueTask<TAccumulate> AggregateAsync<TSource, TAccumulate>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, CancellationToken, ValueTask<TAccumulate>> accumulator, CancellationToken cancellationToken) => AggregateAwaitWithCancellationAsync<TSource, TAccumulate>(source, seed, accumulator, cancellationToken);
-        public static ValueTask<TResult> AggregateAsync<TSource, TAccumulate, TResult>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, CancellationToken, ValueTask<TAccumulate>> accumulator, Func<TAccumulate, CancellationToken, ValueTask<TResult>> resultSelector, CancellationToken cancellationToken) => AggregateAwaitWithCancellationAsync<TSource, TAccumulate, TResult>(source, seed, accumulator, resultSelector, cancellationToken);
-        public static ValueTask<bool> AllAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => AllAwaitWithCancellationAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<bool> AnyAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => AnyAwaitWithCancellationAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<double> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<int> CountAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => CountAwaitWithCancellationAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<TSource> FirstAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => FirstAwaitWithCancellationAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<TSource> FirstOrDefaultAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => FirstOrDefaultAwaitWithCancellationAsync<TSource>(source, predicate, cancellationToken);
-        public static Task ForEachAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, Task> action, CancellationToken cancellationToken) => ForEachAwaitWithCancellationAsync<TSource>(source, action, cancellationToken);
-        public static Task ForEachAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, Task> action, CancellationToken cancellationToken) => ForEachAwaitWithCancellationAsync<TSource>(source, action, cancellationToken);
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => GroupByAwaitWithCancellation<TSource, TKey>(source, keySelector);
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer) => GroupByAwaitWithCancellation<TSource, TKey>(source, keySelector, comparer);
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector) => GroupByAwaitWithCancellation<TSource, TKey, TElement>(source, keySelector, elementSelector);
-        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, CancellationToken, ValueTask<TResult>> resultSelector) => GroupByAwaitWithCancellation<TSource, TKey, TResult>(source, keySelector, resultSelector);
-        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, CancellationToken, ValueTask<TResult>> resultSelector) => GroupByAwaitWithCancellation<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector);
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitWithCancellation<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer);
-        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitWithCancellation<TSource, TKey, TResult>(source, keySelector, resultSelector, comparer);
-        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitWithCancellation<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector, comparer);
-        public static IAsyncEnumerable<TResult> GroupJoin<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, CancellationToken, ValueTask<TResult>> resultSelector) => GroupJoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector);
-        public static IAsyncEnumerable<TResult> GroupJoin<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupJoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer);
-        public static IAsyncEnumerable<TResult> Join<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, CancellationToken, ValueTask<TResult>> resultSelector) => JoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector);
-        public static IAsyncEnumerable<TResult> Join<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => JoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer);
-        public static ValueTask<TSource> LastAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LastAwaitWithCancellationAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<TSource> LastOrDefaultAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LastOrDefaultAwaitWithCancellationAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<long> LongCountAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LongCountAwaitWithCancellationAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<long> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<long?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<TResult> MaxAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsync<TSource, TResult>(source, selector, cancellationToken);
-        public static ValueTask<int> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<int?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<int> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<int?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<long> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<long?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<TResult> MinAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsync<TSource, TResult>(source, selector, cancellationToken);
-        public static IOrderedAsyncEnumerable<TSource> OrderBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => OrderByAwaitWithCancellation<TSource, TKey>(source, keySelector);
-        public static IOrderedAsyncEnumerable<TSource> OrderBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => OrderByAwaitWithCancellation<TSource, TKey>(source, keySelector, comparer);
-        public static IOrderedAsyncEnumerable<TSource> OrderByDescending<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => OrderByDescendingAwaitWithCancellation<TSource, TKey>(source, keySelector);
-        public static IOrderedAsyncEnumerable<TSource> OrderByDescending<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => OrderByDescendingAwaitWithCancellation<TSource, TKey>(source, keySelector, comparer);
-        public static IAsyncEnumerable<TResult> Select<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector) => SelectAwaitWithCancellation<TSource, TResult>(source, selector);
-        public static IAsyncEnumerable<TResult> Select<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<TResult>> selector) => SelectAwaitWithCancellation<TSource, TResult>(source, selector);
-        public static IAsyncEnumerable<TResult> SelectMany<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<IAsyncEnumerable<TResult>>> selector) => SelectManyAwaitWithCancellation<TSource, TResult>(source, selector);
-        public static IAsyncEnumerable<TResult> SelectMany<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<IAsyncEnumerable<TResult>>> selector) => SelectManyAwaitWithCancellation<TSource, TResult>(source, selector);
-        public static IAsyncEnumerable<TResult> SelectMany<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, CancellationToken, ValueTask<TResult>> resultSelector) => SelectManyAwaitWithCancellation<TSource, TCollection, TResult>(source, collectionSelector, resultSelector);
-        public static IAsyncEnumerable<TResult> SelectMany<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, CancellationToken, ValueTask<TResult>> resultSelector) => SelectManyAwaitWithCancellation<TSource, TCollection, TResult>(source, collectionSelector, resultSelector);
-        public static ValueTask<TSource> SingleAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => SingleAwaitWithCancellationAsync<TSource>(source, predicate, cancellationToken);
-        public static ValueTask<TSource> SingleOrDefaultAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => SingleOrDefaultAwaitWithCancellationAsync<TSource>(source, predicate, cancellationToken);
-        public static IAsyncEnumerable<TSource> SkipWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate) => SkipWhileAwaitWithCancellation<TSource>(source, predicate);
-        public static IAsyncEnumerable<TSource> SkipWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate) => SkipWhileAwaitWithCancellation<TSource>(source, predicate);
-        public static ValueTask<int?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<long?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<int> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<long> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<float> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<double> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static ValueTask<decimal> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsync<TSource>(source, selector, cancellationToken);
-        public static IAsyncEnumerable<TSource> TakeWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate) => TakeWhileAwaitWithCancellation<TSource>(source, predicate);
-        public static IAsyncEnumerable<TSource> TakeWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate) => TakeWhileAwaitWithCancellation<TSource>(source, predicate);
-        public static IOrderedAsyncEnumerable<TSource> ThenBy<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => ThenByAwaitWithCancellation<TSource, TKey>(source, keySelector);
-        public static IOrderedAsyncEnumerable<TSource> ThenBy<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => ThenByAwaitWithCancellation<TSource, TKey>(source, keySelector, comparer);
-        public static IOrderedAsyncEnumerable<TSource> ThenByDescending<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => ThenByDescendingAwaitWithCancellation<TSource, TKey>(source, keySelector);
-        public static IOrderedAsyncEnumerable<TSource> ThenByDescending<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => ThenByDescendingAwaitWithCancellation<TSource, TKey>(source, keySelector, comparer);
-        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, CancellationToken cancellationToken) => ToDictionaryAwaitWithCancellationAsync<TSource, TKey>(source, keySelector, cancellationToken);
-        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToDictionaryAwaitWithCancellationAsync<TSource, TKey>(source, keySelector, comparer, cancellationToken);
-        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken) => ToDictionaryAwaitWithCancellationAsync<TSource, TKey, TElement>(source, keySelector, elementSelector, cancellationToken);
-        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToDictionaryAwaitWithCancellationAsync<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer, cancellationToken);
-        public static ValueTask<ILookup<TKey, TSource>> ToLookupAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, CancellationToken cancellationToken) => ToLookupAwaitWithCancellationAsync<TSource, TKey>(source, keySelector, cancellationToken);
-        public static ValueTask<ILookup<TKey, TElement>> ToLookupAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken) => ToLookupAwaitWithCancellationAsync<TSource, TKey, TElement>(source, keySelector, elementSelector, cancellationToken);
-        public static ValueTask<ILookup<TKey, TSource>> ToLookupAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToLookupAwaitWithCancellationAsync<TSource, TKey>(source, keySelector, comparer, cancellationToken);
-        public static ValueTask<ILookup<TKey, TElement>> ToLookupAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToLookupAwaitWithCancellationAsync<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer, cancellationToken);
-        public static IAsyncEnumerable<TSource> Where<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate) => WhereAwaitWithCancellation<TSource>(source, predicate);
-        public static IAsyncEnumerable<TSource> Where<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate) => WhereAwaitWithCancellation<TSource>(source, predicate);
-        public static IAsyncEnumerable<TResult> Zip<TFirst, TSecond, TResult>(this IAsyncEnumerable<TFirst> first, IAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, CancellationToken, ValueTask<TResult>> selector) => ZipAwaitWithCancellation<TFirst, TSecond, TResult>(first, second, selector);
+        public static ValueTask<TSource> AggregateAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, TSource, CancellationToken, ValueTask<TSource>> accumulator, CancellationToken cancellationToken) => AggregateAwaitWithCancellationAsyncCore<TSource>(source, accumulator, cancellationToken);
+        public static ValueTask<TAccumulate> AggregateAsync<TSource, TAccumulate>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, CancellationToken, ValueTask<TAccumulate>> accumulator, CancellationToken cancellationToken) => AggregateAwaitWithCancellationAsyncCore<TSource, TAccumulate>(source, seed, accumulator, cancellationToken);
+        public static ValueTask<TResult> AggregateAsync<TSource, TAccumulate, TResult>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, CancellationToken, ValueTask<TAccumulate>> accumulator, Func<TAccumulate, CancellationToken, ValueTask<TResult>> resultSelector, CancellationToken cancellationToken) => AggregateAwaitWithCancellationAsyncCore<TSource, TAccumulate, TResult>(source, seed, accumulator, resultSelector, cancellationToken);
+        public static ValueTask<bool> AllAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => AllAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<bool> AnyAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => AnyAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<double?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> AverageAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int> CountAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => CountAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> FirstAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => FirstAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> FirstOrDefaultAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => FirstOrDefaultAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static Task ForEachAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, Task> action, CancellationToken cancellationToken) => ForEachAwaitWithCancellationAsyncCore<TSource>(source, action, cancellationToken);
+        public static Task ForEachAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, Task> action, CancellationToken cancellationToken) => ForEachAwaitWithCancellationAsyncCore<TSource>(source, action, cancellationToken);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => GroupByAwaitWithCancellationCore<TSource, TKey>(source, keySelector);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector) => GroupByAwaitWithCancellationCore<TSource, TKey, TElement>(source, keySelector, elementSelector);
+        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, CancellationToken, ValueTask<TResult>> resultSelector) => GroupByAwaitWithCancellationCore<TSource, TKey, TResult>(source, keySelector, resultSelector);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer) => GroupByAwaitWithCancellationCore<TSource, TKey>(source, keySelector, comparer);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitWithCancellationCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer);
+        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitWithCancellationCore<TSource, TKey, TResult>(source, keySelector, resultSelector, comparer);
+        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, CancellationToken, ValueTask<TResult>> resultSelector) => GroupByAwaitWithCancellationCore<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector);
+        public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitWithCancellationCore<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector, comparer);
+        public static IAsyncEnumerable<TResult> GroupJoin<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, CancellationToken, ValueTask<TResult>> resultSelector) => GroupJoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector);
+        public static IAsyncEnumerable<TResult> GroupJoin<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupJoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer);
+        public static IAsyncEnumerable<TResult> Join<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, CancellationToken, ValueTask<TResult>> resultSelector) => JoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector);
+        public static IAsyncEnumerable<TResult> Join<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => JoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer);
+        public static ValueTask<TSource> LastAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LastAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> LastOrDefaultAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LastOrDefaultAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<long> LongCountAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LongCountAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<int> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> MaxAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<TResult> MaxAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource, TResult>(source, selector, cancellationToken);
+        public static ValueTask<long?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<TResult> MinAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource, TResult>(source, selector, cancellationToken);
+        public static ValueTask<int> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int?> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long> MinAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static IOrderedAsyncEnumerable<TSource> OrderBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => OrderByAwaitWithCancellationCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> OrderBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => OrderByAwaitWithCancellationCore<TSource, TKey>(source, keySelector, comparer);
+        public static IOrderedAsyncEnumerable<TSource> OrderByDescending<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => OrderByDescendingAwaitWithCancellationCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> OrderByDescending<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => OrderByDescendingAwaitWithCancellationCore<TSource, TKey>(source, keySelector, comparer);
+        public static IAsyncEnumerable<TResult> Select<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector) => SelectAwaitWithCancellationCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> Select<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<TResult>> selector) => SelectAwaitWithCancellationCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectMany<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<IAsyncEnumerable<TResult>>> selector) => SelectManyAwaitWithCancellationCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectMany<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<IAsyncEnumerable<TResult>>> selector) => SelectManyAwaitWithCancellationCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectMany<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, CancellationToken, ValueTask<TResult>> resultSelector) => SelectManyAwaitWithCancellationCore<TSource, TCollection, TResult>(source, collectionSelector, resultSelector);
+        public static IAsyncEnumerable<TResult> SelectMany<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, CancellationToken, ValueTask<TResult>> resultSelector) => SelectManyAwaitWithCancellationCore<TSource, TCollection, TResult>(source, collectionSelector, resultSelector);
+        public static ValueTask<TSource> SingleAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => SingleAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> SingleOrDefaultAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => SingleOrDefaultAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static IAsyncEnumerable<TSource> SkipWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate) => SkipWhileAwaitWithCancellationCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TSource> SkipWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate) => SkipWhileAwaitWithCancellationCore<TSource>(source, predicate);
+        public static ValueTask<double> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> SumAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static IAsyncEnumerable<TSource> TakeWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate) => TakeWhileAwaitWithCancellationCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TSource> TakeWhile<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate) => TakeWhileAwaitWithCancellationCore<TSource>(source, predicate);
+        public static IOrderedAsyncEnumerable<TSource> ThenBy<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => ThenByAwaitWithCancellationCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> ThenBy<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => ThenByAwaitWithCancellationCore<TSource, TKey>(source, keySelector, comparer);
+        public static IOrderedAsyncEnumerable<TSource> ThenByDescending<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => ThenByDescendingAwaitWithCancellationCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> ThenByDescending<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => ThenByDescendingAwaitWithCancellationCore<TSource, TKey>(source, keySelector, comparer);
+        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, CancellationToken cancellationToken) => ToDictionaryAwaitWithCancellationAsyncCore<TSource, TKey>(source, keySelector, cancellationToken);
+        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToDictionaryAwaitWithCancellationAsyncCore<TSource, TKey>(source, keySelector, comparer, cancellationToken);
+        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken) => ToDictionaryAwaitWithCancellationAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, cancellationToken);
+        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToDictionaryAwaitWithCancellationAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer, cancellationToken);
+        public static ValueTask<ILookup<TKey, TSource>> ToLookupAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, CancellationToken cancellationToken) => ToLookupAwaitWithCancellationAsyncCore<TSource, TKey>(source, keySelector, cancellationToken);
+        public static ValueTask<ILookup<TKey, TSource>> ToLookupAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToLookupAwaitWithCancellationAsyncCore<TSource, TKey>(source, keySelector, comparer, cancellationToken);
+        public static ValueTask<ILookup<TKey, TElement>> ToLookupAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken) => ToLookupAwaitWithCancellationAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, cancellationToken);
+        public static ValueTask<ILookup<TKey, TElement>> ToLookupAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToLookupAwaitWithCancellationAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer, cancellationToken);
+        public static IAsyncEnumerable<TSource> Where<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate) => WhereAwaitWithCancellationCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TSource> Where<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate) => WhereAwaitWithCancellationCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TResult> Zip<TFirst, TSecond, TResult>(this IAsyncEnumerable<TFirst> first, IAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, CancellationToken, ValueTask<TResult>> selector) => ZipAwaitWithCancellationCore<TFirst, TSecond, TResult>(first, second, selector);
 #endif
-    }
-}
+#else
+        public static ValueTask<TSource> AggregateAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, TSource, ValueTask<TSource>> accumulator, CancellationToken cancellationToken) => AggregateAwaitAsyncCore<TSource>(source, accumulator, cancellationToken);
+        public static ValueTask<TAccumulate> AggregateAwaitAsync<TSource, TAccumulate>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, ValueTask<TAccumulate>> accumulator, CancellationToken cancellationToken) => AggregateAwaitAsyncCore<TSource, TAccumulate>(source, seed, accumulator, cancellationToken);
+        public static ValueTask<TResult> AggregateAwaitAsync<TSource, TAccumulate, TResult>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, ValueTask<TAccumulate>> accumulator, Func<TAccumulate, ValueTask<TResult>> resultSelector, CancellationToken cancellationToken) => AggregateAwaitAsyncCore<TSource, TAccumulate, TResult>(source, seed, accumulator, resultSelector, cancellationToken);
+        public static ValueTask<bool> AllAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => AllAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<bool> AnyAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => AnyAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<double?> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken) => AverageAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int> CountAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => CountAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> FirstAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => FirstAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> FirstOrDefaultAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => FirstOrDefaultAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static Task ForEachAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, Task> action, CancellationToken cancellationToken) => ForEachAwaitAsyncCore<TSource>(source, action, cancellationToken);
+        public static Task ForEachAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, Task> action, CancellationToken cancellationToken) => ForEachAwaitAsyncCore<TSource>(source, action, cancellationToken);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupByAwait<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => GroupByAwaitCore<TSource, TKey>(source, keySelector);
+        public static IAsyncEnumerable<TResult> GroupByAwait<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, ValueTask<TResult>> resultSelector) => GroupByAwaitCore<TSource, TKey, TResult>(source, keySelector, resultSelector);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupByAwait<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer) => GroupByAwaitCore<TSource, TKey>(source, keySelector, comparer);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupByAwait<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector) => GroupByAwaitCore<TSource, TKey, TElement>(source, keySelector, elementSelector);
+        public static IAsyncEnumerable<TResult> GroupByAwait<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitCore<TSource, TKey, TResult>(source, keySelector, resultSelector, comparer);
+        public static IAsyncEnumerable<TResult> GroupByAwait<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, ValueTask<TResult>> resultSelector) => GroupByAwaitCore<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupByAwait<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer);
+        public static IAsyncEnumerable<TResult> GroupByAwait<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitCore<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector, comparer);
+        public static IAsyncEnumerable<TResult> GroupJoinAwait<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, ValueTask<TResult>> resultSelector) => GroupJoinAwaitCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector);
+        public static IAsyncEnumerable<TResult> GroupJoinAwait<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupJoinAwaitCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer);
+        public static IAsyncEnumerable<TResult> JoinAwait<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, ValueTask<TResult>> resultSelector) => JoinAwaitCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector);
+        public static IAsyncEnumerable<TResult> JoinAwait<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => JoinAwaitCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer);
+        public static ValueTask<TSource> LastAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LastAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> LastOrDefaultAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LastOrDefaultAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<long> LongCountAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LongCountAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<int> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int?> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long?> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<TResult> MaxAwaitAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector, CancellationToken cancellationToken) => MaxAwaitAsyncCore<TSource, TResult>(source, selector, cancellationToken);
+        public static ValueTask<float> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int?> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long?> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<TResult> MinAwaitAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector, CancellationToken cancellationToken) => MinAwaitAsyncCore<TSource, TResult>(source, selector, cancellationToken);
+        public static IOrderedAsyncEnumerable<TSource> OrderByAwait<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => OrderByAwaitCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> OrderByAwait<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => OrderByAwaitCore<TSource, TKey>(source, keySelector, comparer);
+        public static IOrderedAsyncEnumerable<TSource> OrderByDescendingAwait<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => OrderByDescendingAwaitCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> OrderByDescendingAwait<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => OrderByDescendingAwaitCore<TSource, TKey>(source, keySelector, comparer);
+        public static IAsyncEnumerable<TResult> SelectAwait<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector) => SelectAwaitCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectAwait<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<TResult>> selector) => SelectAwaitCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectManyAwait<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<IAsyncEnumerable<TResult>>> selector) => SelectManyAwaitCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectManyAwait<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<IAsyncEnumerable<TResult>>> selector) => SelectManyAwaitCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectManyAwait<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, ValueTask<TResult>> resultSelector) => SelectManyAwaitCore<TSource, TCollection, TResult>(source, collectionSelector, resultSelector);
+        public static IAsyncEnumerable<TResult> SelectManyAwait<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, ValueTask<TResult>> resultSelector) => SelectManyAwaitCore<TSource, TCollection, TResult>(source, collectionSelector, resultSelector);
+        public static ValueTask<TSource> SingleAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => SingleAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> SingleOrDefaultAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken) => SingleOrDefaultAwaitAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static IAsyncEnumerable<TSource> SkipWhileAwait<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate) => SkipWhileAwaitCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TSource> SkipWhileAwait<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate) => SkipWhileAwaitCore<TSource>(source, predicate);
+        public static ValueTask<double> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int?> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long?> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken) => SumAwaitAsyncCore<TSource>(source, selector, cancellationToken);
+        public static IAsyncEnumerable<TSource> TakeWhileAwait<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate) => TakeWhileAwaitCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TSource> TakeWhileAwait<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate) => TakeWhileAwaitCore<TSource>(source, predicate);
+        public static IOrderedAsyncEnumerable<TSource> ThenByAwait<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => ThenByAwaitCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> ThenByAwait<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => ThenByAwaitCore<TSource, TKey>(source, keySelector, comparer);
+        public static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwait<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) => ThenByDescendingAwaitCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwait<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => ThenByDescendingAwaitCore<TSource, TKey>(source, keySelector, comparer);
+        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAwaitAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, CancellationToken cancellationToken) => ToDictionaryAwaitAsyncCore<TSource, TKey>(source, keySelector, cancellationToken);
+        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAwaitAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToDictionaryAwaitAsyncCore<TSource, TKey>(source, keySelector, comparer, cancellationToken);
+        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAwaitAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken) => ToDictionaryAwaitAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, cancellationToken);
+        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAwaitAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToDictionaryAwaitAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer, cancellationToken);
+        public static ValueTask<ILookup<TKey, TSource>> ToLookupAwaitAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, CancellationToken cancellationToken) => ToLookupAwaitAsyncCore<TSource, TKey>(source, keySelector, cancellationToken);
+        public static ValueTask<ILookup<TKey, TSource>> ToLookupAwaitAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToLookupAwaitAsyncCore<TSource, TKey>(source, keySelector, comparer, cancellationToken);
+        public static ValueTask<ILookup<TKey, TElement>> ToLookupAwaitAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken) => ToLookupAwaitAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, cancellationToken);
+        public static ValueTask<ILookup<TKey, TElement>> ToLookupAwaitAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToLookupAwaitAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer, cancellationToken);
+        public static IAsyncEnumerable<TSource> WhereAwait<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate) => WhereAwaitCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TSource> WhereAwait<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate) => WhereAwaitCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TResult> ZipAwait<TFirst, TSecond, TResult>(this IAsyncEnumerable<TFirst> first, IAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, ValueTask<TResult>> selector) => ZipAwaitCore<TFirst, TSecond, TResult>(first, second, selector);
 
+#if !NO_DEEP_CANCELLATION
+        public static ValueTask<TSource> AggregateAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, TSource, CancellationToken, ValueTask<TSource>> accumulator, CancellationToken cancellationToken) => AggregateAwaitWithCancellationAsyncCore<TSource>(source, accumulator, cancellationToken);
+        public static ValueTask<TAccumulate> AggregateAwaitWithCancellationAsync<TSource, TAccumulate>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, CancellationToken, ValueTask<TAccumulate>> accumulator, CancellationToken cancellationToken) => AggregateAwaitWithCancellationAsyncCore<TSource, TAccumulate>(source, seed, accumulator, cancellationToken);
+        public static ValueTask<TResult> AggregateAwaitWithCancellationAsync<TSource, TAccumulate, TResult>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, CancellationToken, ValueTask<TAccumulate>> accumulator, Func<TAccumulate, CancellationToken, ValueTask<TResult>> resultSelector, CancellationToken cancellationToken) => AggregateAwaitWithCancellationAsyncCore<TSource, TAccumulate, TResult>(source, seed, accumulator, resultSelector, cancellationToken);
+        public static ValueTask<bool> AllAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => AllAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<bool> AnyAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => AnyAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<double?> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken) => AverageAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int> CountAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => CountAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> FirstAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => FirstAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> FirstOrDefaultAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => FirstOrDefaultAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static Task ForEachAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, Task> action, CancellationToken cancellationToken) => ForEachAwaitWithCancellationAsyncCore<TSource>(source, action, cancellationToken);
+        public static Task ForEachAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, Task> action, CancellationToken cancellationToken) => ForEachAwaitWithCancellationAsyncCore<TSource>(source, action, cancellationToken);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupByAwaitWithCancellation<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => GroupByAwaitWithCancellationCore<TSource, TKey>(source, keySelector);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupByAwaitWithCancellation<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector) => GroupByAwaitWithCancellationCore<TSource, TKey, TElement>(source, keySelector, elementSelector);
+        public static IAsyncEnumerable<TResult> GroupByAwaitWithCancellation<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, CancellationToken, ValueTask<TResult>> resultSelector) => GroupByAwaitWithCancellationCore<TSource, TKey, TResult>(source, keySelector, resultSelector);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupByAwaitWithCancellation<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer) => GroupByAwaitWithCancellationCore<TSource, TKey>(source, keySelector, comparer);
+        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupByAwaitWithCancellation<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitWithCancellationCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer);
+        public static IAsyncEnumerable<TResult> GroupByAwaitWithCancellation<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitWithCancellationCore<TSource, TKey, TResult>(source, keySelector, resultSelector, comparer);
+        public static IAsyncEnumerable<TResult> GroupByAwaitWithCancellation<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, CancellationToken, ValueTask<TResult>> resultSelector) => GroupByAwaitWithCancellationCore<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector);
+        public static IAsyncEnumerable<TResult> GroupByAwaitWithCancellation<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupByAwaitWithCancellationCore<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector, comparer);
+        public static IAsyncEnumerable<TResult> GroupJoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, CancellationToken, ValueTask<TResult>> resultSelector) => GroupJoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector);
+        public static IAsyncEnumerable<TResult> GroupJoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => GroupJoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer);
+        public static IAsyncEnumerable<TResult> JoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, CancellationToken, ValueTask<TResult>> resultSelector) => JoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector);
+        public static IAsyncEnumerable<TResult> JoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) => JoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer);
+        public static ValueTask<TSource> LastAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LastAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> LastOrDefaultAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LastOrDefaultAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<long> LongCountAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => LongCountAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<int> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int?> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long?> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<TResult> MaxAwaitWithCancellationAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector, CancellationToken cancellationToken) => MaxAwaitWithCancellationAsyncCore<TSource, TResult>(source, selector, cancellationToken);
+        public static ValueTask<long?> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<TResult> MinAwaitWithCancellationAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource, TResult>(source, selector, cancellationToken);
+        public static ValueTask<int> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int?> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken) => MinAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static IOrderedAsyncEnumerable<TSource> OrderByAwaitWithCancellation<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => OrderByAwaitWithCancellationCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> OrderByAwaitWithCancellation<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => OrderByAwaitWithCancellationCore<TSource, TKey>(source, keySelector, comparer);
+        public static IOrderedAsyncEnumerable<TSource> OrderByDescendingAwaitWithCancellation<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => OrderByDescendingAwaitWithCancellationCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> OrderByDescendingAwaitWithCancellation<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => OrderByDescendingAwaitWithCancellationCore<TSource, TKey>(source, keySelector, comparer);
+        public static IAsyncEnumerable<TResult> SelectAwaitWithCancellation<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector) => SelectAwaitWithCancellationCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectAwaitWithCancellation<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<TResult>> selector) => SelectAwaitWithCancellationCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectManyAwaitWithCancellation<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<IAsyncEnumerable<TResult>>> selector) => SelectManyAwaitWithCancellationCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectManyAwaitWithCancellation<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<IAsyncEnumerable<TResult>>> selector) => SelectManyAwaitWithCancellationCore<TSource, TResult>(source, selector);
+        public static IAsyncEnumerable<TResult> SelectManyAwaitWithCancellation<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, CancellationToken, ValueTask<TResult>> resultSelector) => SelectManyAwaitWithCancellationCore<TSource, TCollection, TResult>(source, collectionSelector, resultSelector);
+        public static IAsyncEnumerable<TResult> SelectManyAwaitWithCancellation<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, CancellationToken, ValueTask<TResult>> resultSelector) => SelectManyAwaitWithCancellationCore<TSource, TCollection, TResult>(source, collectionSelector, resultSelector);
+        public static ValueTask<TSource> SingleAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => SingleAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static ValueTask<TSource> SingleOrDefaultAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken) => SingleOrDefaultAwaitWithCancellationAsyncCore<TSource>(source, predicate, cancellationToken);
+        public static IAsyncEnumerable<TSource> SkipWhileAwaitWithCancellation<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate) => SkipWhileAwaitWithCancellationCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TSource> SkipWhileAwaitWithCancellation<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate) => SkipWhileAwaitWithCancellationCore<TSource>(source, predicate);
+        public static ValueTask<double> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int?> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long?> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float?> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<double?> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<decimal?> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<int> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<long> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static ValueTask<float> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken) => SumAwaitWithCancellationAsyncCore<TSource>(source, selector, cancellationToken);
+        public static IAsyncEnumerable<TSource> TakeWhileAwaitWithCancellation<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate) => TakeWhileAwaitWithCancellationCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TSource> TakeWhileAwaitWithCancellation<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate) => TakeWhileAwaitWithCancellationCore<TSource>(source, predicate);
+        public static IOrderedAsyncEnumerable<TSource> ThenByAwaitWithCancellation<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => ThenByAwaitWithCancellationCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> ThenByAwaitWithCancellation<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => ThenByAwaitWithCancellationCore<TSource, TKey>(source, keySelector, comparer);
+        public static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwaitWithCancellation<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) => ThenByDescendingAwaitWithCancellationCore<TSource, TKey>(source, keySelector);
+        public static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwaitWithCancellation<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) => ThenByDescendingAwaitWithCancellationCore<TSource, TKey>(source, keySelector, comparer);
+        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAwaitWithCancellationAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, CancellationToken cancellationToken) => ToDictionaryAwaitWithCancellationAsyncCore<TSource, TKey>(source, keySelector, cancellationToken);
+        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAwaitWithCancellationAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToDictionaryAwaitWithCancellationAsyncCore<TSource, TKey>(source, keySelector, comparer, cancellationToken);
+        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAwaitWithCancellationAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken) => ToDictionaryAwaitWithCancellationAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, cancellationToken);
+        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAwaitWithCancellationAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToDictionaryAwaitWithCancellationAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer, cancellationToken);
+        public static ValueTask<ILookup<TKey, TSource>> ToLookupAwaitWithCancellationAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, CancellationToken cancellationToken) => ToLookupAwaitWithCancellationAsyncCore<TSource, TKey>(source, keySelector, cancellationToken);
+        public static ValueTask<ILookup<TKey, TSource>> ToLookupAwaitWithCancellationAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToLookupAwaitWithCancellationAsyncCore<TSource, TKey>(source, keySelector, comparer, cancellationToken);
+        public static ValueTask<ILookup<TKey, TElement>> ToLookupAwaitWithCancellationAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken) => ToLookupAwaitWithCancellationAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, cancellationToken);
+        public static ValueTask<ILookup<TKey, TElement>> ToLookupAwaitWithCancellationAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken) => ToLookupAwaitWithCancellationAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer, cancellationToken);
+        public static IAsyncEnumerable<TSource> WhereAwaitWithCancellation<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate) => WhereAwaitWithCancellationCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TSource> WhereAwaitWithCancellation<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate) => WhereAwaitWithCancellationCore<TSource>(source, predicate);
+        public static IAsyncEnumerable<TResult> ZipAwaitWithCancellation<TFirst, TSecond, TResult>(this IAsyncEnumerable<TFirst> first, IAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, CancellationToken, ValueTask<TResult>> selector) => ZipAwaitWithCancellationCore<TFirst, TSecond, TResult>(first, second, selector);
+#endif
 #endif
+    }
+}
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/AsyncEnumerable.AsyncOverloads.tt b/Ix.NET/Source/System.Linq.Async/System/Linq/AsyncEnumerable.AsyncOverloads.tt
index 884d65e124..957763b6ba 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/AsyncEnumerable.AsyncOverloads.tt
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/AsyncEnumerable.AsyncOverloads.tt
@@ -11,16 +11,6 @@
 <#@ import namespace="System.Linq" #>
 <#@ import namespace="System.Reflection" #>
 <#@ output extension=".cs" #>
-#if SUPPORT_FLAT_ASYNC_API
-
-using System.Collections.Generic;
-using System.Threading;
-using System.Threading.Tasks;
-
-namespace System.Linq
-{
-    partial class AsyncEnumerable
-    {
 <#
 Func<Type, string> toCSharp = null;
 toCSharp = t =>
@@ -75,9 +65,21 @@ toCSharp = t =>
         return t.Name;
     }
 };
+#>
+using System.Collections.Generic;
+using System.Threading;
+using System.Threading.Tasks;
 
-var methods = typeof(AsyncEnumerable).GetMethods(BindingFlags.Public | BindingFlags.Static);
-var asyncMethods = methods.Where(m => m.Name.Contains("Await")).OrderBy(m => m.Name).ThenBy(m => m.GetParameters().Length);
+namespace System.Linq
+{
+    partial class AsyncEnumerable
+    {
+<#
+var methods = typeof(AsyncEnumerable).GetMethods(BindingFlags.NonPublic | BindingFlags.Static);
+var asyncMethods = methods.Where(m => m.Name.Contains("Await") && m.Name.EndsWith("Core")).OrderBy(m => m.Name).ThenBy(m => m.GetParameters().Length);
+#>
+#if SUPPORT_FLAT_ASYNC_API
+<#
 foreach (var g in asyncMethods.GroupBy(m => m.Name.Contains("WithCancellation")))
 {
     if (g.Key)
@@ -91,7 +93,7 @@ foreach (var g in asyncMethods.GroupBy(m => m.Name.Contains("WithCancellation"))
     foreach (var m in g)
     {
         var longName = m.Name;
-        var shortName = m.Name.Replace("WithCancellation", "").Replace("Await", "");
+        var shortName = m.Name.Replace("WithCancellation", "").Replace("Await", "").Replace("Core", "");
         var genArgs = m.IsGenericMethod ? "<" + string.Join(", ", m.GetGenericArguments().Select(t => t.Name)) + ">" : "";
         var returnType = toCSharp(m.ReturnType);
         var isExtension = m.IsDefined(typeof(System.Runtime.CompilerServices.ExtensionAttribute), true);
@@ -110,7 +112,40 @@ foreach (var g in asyncMethods.GroupBy(m => m.Name.Contains("WithCancellation"))
     }
 }
 #>
+#else
+<#
+foreach (var g in asyncMethods.GroupBy(m => m.Name.Contains("WithCancellation")))
+{
+    if (g.Key)
+    {
+#>
+
+#if !NO_DEEP_CANCELLATION
+<#
     }
-}
 
+    foreach (var m in g)
+    {
+        var longName = m.Name;
+        var shortName = m.Name.Replace("Core", "");
+        var genArgs = m.IsGenericMethod ? "<" + string.Join(", ", m.GetGenericArguments().Select(t => t.Name)) + ">" : "";
+        var returnType = toCSharp(m.ReturnType);
+        var isExtension = m.IsDefined(typeof(System.Runtime.CompilerServices.ExtensionAttribute), true);
+        var pars = (isExtension ? "this " : "") + string.Join(", ", m.GetParameters().Select(p => toCSharp(p.ParameterType) + " " + p.Name));
+        var args = string.Join(", ", m.GetParameters().Select(p => p.Name));
+#>
+        public static <#=returnType#> <#=shortName#><#=genArgs#>(<#=pars#>) => <#=longName#><#=genArgs#>(<#=args#>);
+<#
+    }
+
+    if (g.Key)
+    {
+#>
 #endif
+<#
+    }
+}
+#>
+#endif
+    }
+}
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Aggregate.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Aggregate.cs
index d2dab5cc1a..25a2dca49a 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Aggregate.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Aggregate.cs
@@ -40,7 +40,7 @@ static async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<TSource> AggregateAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, TSource, ValueTask<TSource>> accumulator, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> AggregateAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, TSource, ValueTask<TSource>> accumulator, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -71,7 +71,7 @@ static async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<TSource> AggregateAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, TSource, CancellationToken, ValueTask<TSource>> accumulator, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> AggregateAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, TSource, CancellationToken, ValueTask<TSource>> accumulator, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -124,7 +124,7 @@ static async ValueTask<TAccumulate> Core(IAsyncEnumerable<TSource> _source, TAcc
             }
         }
 
-        public static ValueTask<TAccumulate> AggregateAwaitAsync<TSource, TAccumulate>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, ValueTask<TAccumulate>> accumulator, CancellationToken cancellationToken = default)
+        internal static ValueTask<TAccumulate> AggregateAwaitAsyncCore<TSource, TAccumulate>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, ValueTask<TAccumulate>> accumulator, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -147,7 +147,7 @@ static async ValueTask<TAccumulate> Core(IAsyncEnumerable<TSource> _source, TAcc
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<TAccumulate> AggregateAwaitWithCancellationAsync<TSource, TAccumulate>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, CancellationToken, ValueTask<TAccumulate>> accumulator, CancellationToken cancellationToken = default)
+        internal static ValueTask<TAccumulate> AggregateAwaitWithCancellationAsyncCore<TSource, TAccumulate>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, CancellationToken, ValueTask<TAccumulate>> accumulator, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -194,7 +194,7 @@ static async ValueTask<TResult> Core(IAsyncEnumerable<TSource> _source, TAccumul
             }
         }
 
-        public static ValueTask<TResult> AggregateAwaitAsync<TSource, TAccumulate, TResult>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, ValueTask<TAccumulate>> accumulator, Func<TAccumulate, ValueTask<TResult>> resultSelector, CancellationToken cancellationToken = default)
+        internal static ValueTask<TResult> AggregateAwaitAsyncCore<TSource, TAccumulate, TResult>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, ValueTask<TAccumulate>> accumulator, Func<TAccumulate, ValueTask<TResult>> resultSelector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -219,7 +219,7 @@ static async ValueTask<TResult> Core(IAsyncEnumerable<TSource> _source, TAccumul
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<TResult> AggregateAwaitWithCancellationAsync<TSource, TAccumulate, TResult>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, CancellationToken, ValueTask<TAccumulate>> accumulator, Func<TAccumulate, CancellationToken, ValueTask<TResult>> resultSelector, CancellationToken cancellationToken = default)
+        internal static ValueTask<TResult> AggregateAwaitWithCancellationAsyncCore<TSource, TAccumulate, TResult>(this IAsyncEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, CancellationToken, ValueTask<TAccumulate>> accumulator, Func<TAccumulate, CancellationToken, ValueTask<TResult>> resultSelector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/All.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/All.cs
index 46041173f8..a3a3dcc604 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/All.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/All.cs
@@ -33,7 +33,7 @@ static async ValueTask<bool> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
             }
         }
 
-        public static ValueTask<bool> AllAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<bool> AllAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -57,7 +57,7 @@ static async ValueTask<bool> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<bool> AllAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<bool> AllAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Any.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Any.cs
index 550581f028..9bfa93f50f 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Any.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Any.cs
@@ -49,7 +49,7 @@ static async ValueTask<bool> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
             }
         }
 
-        public static ValueTask<bool> AnyAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<bool> AnyAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -73,7 +73,7 @@ static async ValueTask<bool> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<bool> AnyAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<bool> AnyAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Average.Generated.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Average.Generated.cs
index d6aa470397..f6b25602c4 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Average.Generated.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Average.Generated.cs
@@ -76,7 +76,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
             }
         }
 
-        public static ValueTask<double> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double> AverageAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -111,7 +111,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<double> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double> AverageAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -212,7 +212,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
             }
         }
 
-        public static ValueTask<double> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double> AverageAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -247,7 +247,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<double> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double> AverageAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -348,7 +348,7 @@ static async ValueTask<float> Core(IAsyncEnumerable<TSource> _source, Func<TSour
             }
         }
 
-        public static ValueTask<float> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float> AverageAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -383,7 +383,7 @@ static async ValueTask<float> Core(IAsyncEnumerable<TSource> _source, Func<TSour
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<float> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float> AverageAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -484,7 +484,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
             }
         }
 
-        public static ValueTask<double> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double> AverageAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -519,7 +519,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<double> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double> AverageAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -620,7 +620,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<decimal> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal> AverageAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -655,7 +655,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<decimal> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal> AverageAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -772,7 +772,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<double?> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double?> AverageAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -815,7 +815,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<double?> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double?> AverageAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -940,7 +940,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<double?> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double?> AverageAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -983,7 +983,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<double?> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double?> AverageAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1108,7 +1108,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<float?> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float?> AverageAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1151,7 +1151,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<float?> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float?> AverageAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1276,7 +1276,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<double?> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double?> AverageAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1319,7 +1319,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<double?> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double?> AverageAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1444,7 +1444,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<decimal?> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal?> AverageAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1487,7 +1487,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<decimal?> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal?> AverageAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Average.Generated.tt b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Average.Generated.tt
index e7a0ef8393..e4cca983db 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Average.Generated.tt
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Average.Generated.tt
@@ -191,7 +191,8 @@ else
             }
         }
 
-        public static ValueTask<<#=o.res#>> AverageAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<<#=o.type#>>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<<#=o.res#>> AverageAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<<#=o.type#>>> selector, CancellationToken cancellationToken = default)
+
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -266,7 +267,8 @@ else
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<<#=o.res#>> AverageAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<<#=o.type#>>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<<#=o.res#>> AverageWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<<#=o.type#>>> selector, CancellationToken cancellationToken = default)
+
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Count.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Count.cs
index f0ac22ddf9..a6ac535a2e 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Count.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Count.cs
@@ -72,7 +72,7 @@ static async ValueTask<int> Core(IAsyncEnumerable<TSource> _source, Func<TSource
             }
         }
 
-        public static ValueTask<int> CountAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<int> CountAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -101,7 +101,7 @@ static async ValueTask<int> Core(IAsyncEnumerable<TSource> _source, Func<TSource
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<int> CountAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<int> CountAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/First.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/First.cs
index 98f06c9f95..0eb78c39b8 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/First.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/First.cs
@@ -42,7 +42,7 @@ static async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<TSource> FirstAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> FirstAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -60,7 +60,7 @@ static async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<TSource> FirstAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> FirstAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/FirstOrDefault.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/FirstOrDefault.cs
index 2869761cb7..0fc1358c61 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/FirstOrDefault.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/FirstOrDefault.cs
@@ -42,7 +42,7 @@ static async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<TSource> FirstOrDefaultAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> FirstOrDefaultAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -60,7 +60,7 @@ static async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<TSource> FirstOrDefaultAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> FirstOrDefaultAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ForEach.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ForEach.cs
index 8e68b35990..8ad5d65dcb 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ForEach.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ForEach.cs
@@ -55,7 +55,7 @@ static async Task Core(IAsyncEnumerable<TSource> _source, Action<TSource, int> _
             }
         }
 
-        public static Task ForEachAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, Task> action, CancellationToken cancellationToken = default)
+        internal static Task ForEachAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, Task> action, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -73,7 +73,7 @@ static async Task Core(IAsyncEnumerable<TSource> _source, Func<TSource, Task> _a
             }
         }
 
-        public static Task ForEachAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, Task> action, CancellationToken cancellationToken)
+        internal static Task ForEachAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, Task> action, CancellationToken cancellationToken)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -91,7 +91,7 @@ static async Task Core(IAsyncEnumerable<TSource> _source, Func<TSource, Cancella
             }
         }
 
-        public static Task ForEachAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, Task> action, CancellationToken cancellationToken = default)
+        internal static Task ForEachAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, Task> action, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -111,7 +111,7 @@ static async Task Core(IAsyncEnumerable<TSource> _source, Func<TSource, int, Tas
             }
         }
 
-        public static Task ForEachAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, Task> action, CancellationToken cancellationToken)
+        internal static Task ForEachAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, Task> action, CancellationToken cancellationToken)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/GroupBy.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/GroupBy.cs
index c4477ce4d0..7893d79d35 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/GroupBy.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/GroupBy.cs
@@ -16,17 +16,17 @@ public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupBy<TSource, T
         public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, TKey> keySelector, IEqualityComparer<TKey> comparer) =>
             new GroupedAsyncEnumerable<TSource, TKey>(source, keySelector, comparer);
 
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupByAwait<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) =>
+        internal static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupByAwaitCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) =>
             new GroupedAsyncEnumerableWithTask<TSource, TKey>(source, keySelector, comparer: null);
 
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupByAwait<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer) =>
+        internal static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupByAwaitCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer) =>
             new GroupedAsyncEnumerableWithTask<TSource, TKey>(source, keySelector, comparer);
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupByAwaitWithCancellation<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) =>
+        internal static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupByAwaitWithCancellationCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) =>
             new GroupedAsyncEnumerableWithTaskAndCancellation<TSource, TKey>(source, keySelector, comparer: null);
 
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupByAwaitWithCancellation<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer) =>
+        internal static IAsyncEnumerable<IAsyncGrouping<TKey, TSource>> GroupByAwaitWithCancellationCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer) =>
             new GroupedAsyncEnumerableWithTaskAndCancellation<TSource, TKey>(source, keySelector, comparer);
 #endif
 
@@ -36,17 +36,17 @@ public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupBy<TSource,
         public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupBy<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, TKey> keySelector, Func<TSource, TElement> elementSelector, IEqualityComparer<TKey> comparer) =>
             new GroupedAsyncEnumerable<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer);
 
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupByAwait<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector) =>
+        internal static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupByAwaitCore<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector) =>
             new GroupedAsyncEnumerableWithTask<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer: null);
 
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupByAwait<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer) =>
+        internal static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupByAwaitCore<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer) =>
             new GroupedAsyncEnumerableWithTask<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer);
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupByAwaitWithCancellation<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector) =>
+        internal static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupByAwaitWithCancellationCore<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector) =>
             new GroupedAsyncEnumerableWithTaskAndCancellation<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer: null);
 
-        public static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupByAwaitWithCancellation<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer) =>
+        internal static IAsyncEnumerable<IAsyncGrouping<TKey, TElement>> GroupByAwaitWithCancellationCore<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer) =>
             new GroupedAsyncEnumerableWithTaskAndCancellation<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer);
 #endif
 
@@ -56,17 +56,17 @@ public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TResult>(this IAs
         public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, TKey> keySelector, Func<TKey, IAsyncEnumerable<TSource>, TResult> resultSelector, IEqualityComparer<TKey> comparer) =>
             new GroupedResultAsyncEnumerable<TSource, TKey, TResult>(source, keySelector, resultSelector, comparer);
 
-        public static IAsyncEnumerable<TResult> GroupByAwait<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, ValueTask<TResult>> resultSelector) =>
+        internal static IAsyncEnumerable<TResult> GroupByAwaitCore<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, ValueTask<TResult>> resultSelector) =>
             new GroupedResultAsyncEnumerableWithTask<TSource, TKey, TResult>(source, keySelector, resultSelector, comparer: null);
 
-        public static IAsyncEnumerable<TResult> GroupByAwait<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) =>
+        internal static IAsyncEnumerable<TResult> GroupByAwaitCore<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) =>
             new GroupedResultAsyncEnumerableWithTask<TSource, TKey, TResult>(source, keySelector, resultSelector, comparer);
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TResult> GroupByAwaitWithCancellation<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, CancellationToken, ValueTask<TResult>> resultSelector) =>
+        internal static IAsyncEnumerable<TResult> GroupByAwaitWithCancellationCore<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, CancellationToken, ValueTask<TResult>> resultSelector) =>
             new GroupedResultAsyncEnumerableWithTaskAndCancellation<TSource, TKey, TResult>(source, keySelector, resultSelector, comparer: null);
 
-        public static IAsyncEnumerable<TResult> GroupByAwaitWithCancellation<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) =>
+        internal static IAsyncEnumerable<TResult> GroupByAwaitWithCancellationCore<TSource, TKey, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TKey, IAsyncEnumerable<TSource>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) =>
             new GroupedResultAsyncEnumerableWithTaskAndCancellation<TSource, TKey, TResult>(source, keySelector, resultSelector, comparer);
 #endif
 
@@ -76,17 +76,17 @@ public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TElement, TResult
         public static IAsyncEnumerable<TResult> GroupBy<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, TKey> keySelector, Func<TSource, TElement> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, TResult> resultSelector, IEqualityComparer<TKey> comparer) =>
             new GroupedResultAsyncEnumerable<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector, comparer);
 
-        public static IAsyncEnumerable<TResult> GroupByAwait<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, ValueTask<TResult>> resultSelector) =>
+        internal static IAsyncEnumerable<TResult> GroupByAwaitCore<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, ValueTask<TResult>> resultSelector) =>
             new GroupedResultAsyncEnumerableWithTask<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector, comparer: null);
 
-        public static IAsyncEnumerable<TResult> GroupByAwait<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) =>
+        internal static IAsyncEnumerable<TResult> GroupByAwaitCore<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) =>
             new GroupedResultAsyncEnumerableWithTask<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector, comparer);
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TResult> GroupByAwaitWithCancellation<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, CancellationToken, ValueTask<TResult>> resultSelector) =>
+        internal static IAsyncEnumerable<TResult> GroupByAwaitWithCancellationCore<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, CancellationToken, ValueTask<TResult>> resultSelector) =>
             new GroupedResultAsyncEnumerableWithTaskAndCancellation<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector, comparer: null);
 
-        public static IAsyncEnumerable<TResult> GroupByAwaitWithCancellation<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) =>
+        internal static IAsyncEnumerable<TResult> GroupByAwaitWithCancellationCore<TSource, TKey, TElement, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, Func<TKey, IAsyncEnumerable<TElement>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer) =>
             new GroupedResultAsyncEnumerableWithTaskAndCancellation<TSource, TKey, TElement, TResult>(source, keySelector, elementSelector, resultSelector, comparer);
 #endif
 
@@ -220,7 +220,7 @@ protected override async ValueTask<bool> MoveNextCore()
                 {
                     case AsyncIteratorState.Allocated:
                         _lookup = await Internal.LookupWithTask<TKey, TSource>.CreateAsync(_source, _keySelector, _comparer, _cancellationToken).ConfigureAwait(false);
-                        _enumerator = _lookup.SelectAwait(async g => await _resultSelector(g.Key, g).ConfigureAwait(false)).GetAsyncEnumerator(_cancellationToken); // REVIEW: Introduce another ApplyResultSelector?
+                        _enumerator = _lookup.SelectAwaitCore(async g => await _resultSelector(g.Key, g).ConfigureAwait(false)).GetAsyncEnumerator(_cancellationToken); // REVIEW: Introduce another ApplyResultSelector?
                         _state = AsyncIteratorState.Iterating;
                         goto case AsyncIteratorState.Iterating;
 
@@ -310,7 +310,7 @@ protected override async ValueTask<bool> MoveNextCore()
                 {
                     case AsyncIteratorState.Allocated:
                         _lookup = await Internal.LookupWithTask<TKey, TSource>.CreateAsync(_source, _keySelector, _comparer, _cancellationToken).ConfigureAwait(false);
-                        _enumerator = _lookup.SelectAwait(async g => await _resultSelector(g.Key, g, _cancellationToken).ConfigureAwait(false)).GetAsyncEnumerator(_cancellationToken); // REVIEW: Introduce another ApplyResultSelector?
+                        _enumerator = _lookup.SelectAwaitCore(async g => await _resultSelector(g.Key, g, _cancellationToken).ConfigureAwait(false)).GetAsyncEnumerator(_cancellationToken); // REVIEW: Introduce another ApplyResultSelector?
                         _state = AsyncIteratorState.Iterating;
                         goto case AsyncIteratorState.Iterating;
 
@@ -493,7 +493,7 @@ protected override async ValueTask<bool> MoveNextCore()
                 {
                     case AsyncIteratorState.Allocated:
                         _lookup = await Internal.LookupWithTask<TKey, TElement>.CreateAsync(_source, _keySelector, _elementSelector, _comparer, _cancellationToken).ConfigureAwait(false);
-                        _enumerator = _lookup.SelectAwait(async g => await _resultSelector(g.Key, g).ConfigureAwait(false)).GetAsyncEnumerator(_cancellationToken); // REVIEW: Introduce another ApplyResultSelector?
+                        _enumerator = _lookup.SelectAwaitCore(async g => await _resultSelector(g.Key, g).ConfigureAwait(false)).GetAsyncEnumerator(_cancellationToken); // REVIEW: Introduce another ApplyResultSelector?
                         _state = AsyncIteratorState.Iterating;
                         goto case AsyncIteratorState.Iterating;
 
@@ -585,7 +585,7 @@ protected override async ValueTask<bool> MoveNextCore()
                 {
                     case AsyncIteratorState.Allocated:
                         _lookup = await Internal.LookupWithTask<TKey, TElement>.CreateAsync(_source, _keySelector, _elementSelector, _comparer, _cancellationToken).ConfigureAwait(false);
-                        _enumerator = _lookup.SelectAwait(async g => await _resultSelector(g.Key, g, _cancellationToken).ConfigureAwait(false)).GetAsyncEnumerator(_cancellationToken); // REVIEW: Introduce another ApplyResultSelector?
+                        _enumerator = _lookup.SelectAwaitCore(async g => await _resultSelector(g.Key, g, _cancellationToken).ConfigureAwait(false)).GetAsyncEnumerator(_cancellationToken); // REVIEW: Introduce another ApplyResultSelector?
                         _state = AsyncIteratorState.Iterating;
                         goto case AsyncIteratorState.Iterating;
 
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/GroupJoin.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/GroupJoin.cs
index c9415468ae..d67038a2e6 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/GroupJoin.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/GroupJoin.cs
@@ -52,10 +52,10 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
 #endif
         }
 
-        public static IAsyncEnumerable<TResult> GroupJoinAwait<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, ValueTask<TResult>> resultSelector) =>
-            GroupJoinAwait<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer: null);
+        internal static IAsyncEnumerable<TResult> GroupJoinAwaitCore<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, ValueTask<TResult>> resultSelector) =>
+            GroupJoinAwaitCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer: null);
 
-        public static IAsyncEnumerable<TResult> GroupJoinAwait<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer)
+        internal static IAsyncEnumerable<TResult> GroupJoinAwaitCore<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer)
         {
             if (outer == null)
                 throw Error.ArgumentNull(nameof(outer));
@@ -95,10 +95,10 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TResult> GroupJoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, CancellationToken, ValueTask<TResult>> resultSelector) =>
-            GroupJoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer: null);
+        internal static IAsyncEnumerable<TResult> GroupJoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, CancellationToken, ValueTask<TResult>> resultSelector) =>
+            GroupJoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer: null);
 
-        public static IAsyncEnumerable<TResult> GroupJoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer)
+        internal static IAsyncEnumerable<TResult> GroupJoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, IAsyncEnumerable<TInner>, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer)
         {
             if (outer == null)
                 throw Error.ArgumentNull(nameof(outer));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Join.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Join.cs
index b00948e7b8..c638c3d6b8 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Join.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Join.cs
@@ -69,10 +69,10 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
 #endif
         }
 
-        public static IAsyncEnumerable<TResult> JoinAwait<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, ValueTask<TResult>> resultSelector) =>
-            JoinAwait<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer: null);
+        internal static IAsyncEnumerable<TResult> JoinAwaitCore<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, ValueTask<TResult>> resultSelector) =>
+            JoinAwaitCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer: null);
 
-        public static IAsyncEnumerable<TResult> JoinAwait<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer)
+        internal static IAsyncEnumerable<TResult> JoinAwaitCore<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, ValueTask<TKey>> outerKeySelector, Func<TInner, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer)
         {
             if (outer == null)
                 throw Error.ArgumentNull(nameof(outer));
@@ -128,10 +128,10 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TResult> JoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, CancellationToken, ValueTask<TResult>> resultSelector) =>
-            JoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer: null);
+        internal static IAsyncEnumerable<TResult> JoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, CancellationToken, ValueTask<TResult>> resultSelector) =>
+            JoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(outer, inner, outerKeySelector, innerKeySelector, resultSelector, comparer: null);
 
-        public static IAsyncEnumerable<TResult> JoinAwaitWithCancellation<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer)
+        internal static IAsyncEnumerable<TResult> JoinAwaitWithCancellationCore<TOuter, TInner, TKey, TResult>(this IAsyncEnumerable<TOuter> outer, IAsyncEnumerable<TInner> inner, Func<TOuter, CancellationToken, ValueTask<TKey>> outerKeySelector, Func<TInner, CancellationToken, ValueTask<TKey>> innerKeySelector, Func<TOuter, TInner, CancellationToken, ValueTask<TResult>> resultSelector, IEqualityComparer<TKey> comparer)
         {
             if (outer == null)
                 throw Error.ArgumentNull(nameof(outer));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Last.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Last.cs
index 45e1d101b9..b92681e705 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Last.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Last.cs
@@ -42,7 +42,7 @@ static async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<TSource> LastAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> LastAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -60,7 +60,7 @@ static async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<TSource> LastAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> LastAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/LastOrDefault.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/LastOrDefault.cs
index cf8b15e19f..66e1f2618d 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/LastOrDefault.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/LastOrDefault.cs
@@ -42,7 +42,7 @@ static async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<TSource> LastOrDefaultAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> LastOrDefaultAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -60,7 +60,7 @@ static async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<TSource> LastOrDefaultAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> LastOrDefaultAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/LongCount.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/LongCount.cs
index 3a7134e022..c48995ea6d 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/LongCount.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/LongCount.cs
@@ -61,7 +61,7 @@ static async ValueTask<long> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
             }
         }
 
-        public static ValueTask<long> LongCountAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<long> LongCountAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -90,7 +90,7 @@ static async ValueTask<long> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<long> LongCountAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<long> LongCountAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Max.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Max.cs
index 4d61d9f082..3e49b367e6 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Max.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Max.cs
@@ -164,7 +164,7 @@ static async ValueTask<TResult> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<TResult> MaxAwaitAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<TResult> MaxAwaitAsyncCore<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -244,7 +244,7 @@ static async ValueTask<TResult> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<TResult> MaxAwaitWithCancellationAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<TResult> MaxAwaitWithCancellationAsyncCore<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Min.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Min.cs
index 9a7889e8ed..88797df30b 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Min.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Min.cs
@@ -166,7 +166,7 @@ static async ValueTask<TResult> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<TResult> MinAwaitAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<TResult> MinAwaitAsyncCore<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -246,7 +246,7 @@ static async ValueTask<TResult> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<TResult> MinAwaitWithCancellationAsync<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<TResult> MinAwaitWithCancellationAsyncCore<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/MinMax.Generated.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/MinMax.Generated.cs
index c8770a7e2d..29485d7830 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/MinMax.Generated.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/MinMax.Generated.cs
@@ -80,7 +80,7 @@ static async ValueTask<int> Core(IAsyncEnumerable<TSource> _source, Func<TSource
             }
         }
 
-        public static ValueTask<int> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<int> MaxAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -117,7 +117,7 @@ static async ValueTask<int> Core(IAsyncEnumerable<TSource> _source, Func<TSource
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<int> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<int> MaxAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -302,7 +302,7 @@ static async ValueTask<int> Core(IAsyncEnumerable<TSource> _source, Func<TSource
             }
         }
 
-        public static ValueTask<int?> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<int?> MaxAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -378,7 +378,7 @@ static async ValueTask<int> Core(IAsyncEnumerable<TSource> _source, Func<TSource
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<int?> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<int?> MaxAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -524,7 +524,7 @@ static async ValueTask<long> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
             }
         }
 
-        public static ValueTask<long> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<long> MaxAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -561,7 +561,7 @@ static async ValueTask<long> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<long> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<long> MaxAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -746,7 +746,7 @@ static async ValueTask<long> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
             }
         }
 
-        public static ValueTask<long?> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<long?> MaxAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -822,7 +822,7 @@ static async ValueTask<long> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<long?> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<long?> MaxAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -998,7 +998,7 @@ static async ValueTask<float> Core(IAsyncEnumerable<TSource> _source, Func<TSour
             }
         }
 
-        public static ValueTask<float> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float> MaxAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1050,7 +1050,7 @@ static async ValueTask<float> Core(IAsyncEnumerable<TSource> _source, Func<TSour
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<float> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float> MaxAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1242,7 +1242,7 @@ static async ValueTask<float> Core(IAsyncEnumerable<TSource> _source, Func<TSour
             }
         }
 
-        public static ValueTask<float?> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float?> MaxAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1314,7 +1314,7 @@ static async ValueTask<float> Core(IAsyncEnumerable<TSource> _source, Func<TSour
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<float?> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float?> MaxAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1486,7 +1486,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
             }
         }
 
-        public static ValueTask<double> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double> MaxAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1538,7 +1538,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<double> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double> MaxAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1730,7 +1730,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
             }
         }
 
-        public static ValueTask<double?> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double?> MaxAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1802,7 +1802,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<double?> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double?> MaxAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1944,7 +1944,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<decimal> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal> MaxAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -1981,7 +1981,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<decimal> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal> MaxAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -2114,7 +2114,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<decimal?> MaxAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal?> MaxAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -2164,7 +2164,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<decimal?> MaxAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal?> MaxAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -2284,7 +2284,7 @@ static async ValueTask<int> Core(IAsyncEnumerable<TSource> _source, Func<TSource
             }
         }
 
-        public static ValueTask<int> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<int> MinAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -2321,7 +2321,7 @@ static async ValueTask<int> Core(IAsyncEnumerable<TSource> _source, Func<TSource
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<int> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<int> MinAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -2458,7 +2458,7 @@ static async ValueTask<int> Core(IAsyncEnumerable<TSource> _source, Func<TSource
             }
         }
 
-        public static ValueTask<int?> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<int?> MinAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -2510,7 +2510,7 @@ static async ValueTask<int> Core(IAsyncEnumerable<TSource> _source, Func<TSource
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<int?> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<int?> MinAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -2632,7 +2632,7 @@ static async ValueTask<long> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
             }
         }
 
-        public static ValueTask<long> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<long> MinAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -2669,7 +2669,7 @@ static async ValueTask<long> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<long> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<long> MinAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -2806,7 +2806,7 @@ static async ValueTask<long> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
             }
         }
 
-        public static ValueTask<long?> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<long?> MinAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -2858,7 +2858,7 @@ static async ValueTask<long> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<long?> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<long?> MinAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -3012,7 +3012,7 @@ static async ValueTask<float> Core(IAsyncEnumerable<TSource> _source, Func<TSour
             }
         }
 
-        public static ValueTask<float> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float> MinAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -3065,7 +3065,7 @@ static async ValueTask<float> Core(IAsyncEnumerable<TSource> _source, Func<TSour
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<float> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float> MinAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -3250,7 +3250,7 @@ static async ValueTask<float> Core(IAsyncEnumerable<TSource> _source, Func<TSour
             }
         }
 
-        public static ValueTask<float?> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float?> MinAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -3318,7 +3318,7 @@ static async ValueTask<float> Core(IAsyncEnumerable<TSource> _source, Func<TSour
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<float?> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float?> MinAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -3488,7 +3488,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
             }
         }
 
-        public static ValueTask<double> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double> MinAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -3541,7 +3541,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<double> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double> MinAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -3726,7 +3726,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
             }
         }
 
-        public static ValueTask<double?> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double?> MinAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -3794,7 +3794,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<double?> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double?> MinAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -3932,7 +3932,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<decimal> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal> MinAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -3969,7 +3969,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<decimal> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal> MinAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -4102,7 +4102,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<decimal?> MinAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal?> MinAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -4152,7 +4152,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<decimal?> MinAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal?> MinAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/MinMax.Generated.tt b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/MinMax.Generated.tt
index 6022691633..c72e6f78e1 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/MinMax.Generated.tt
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/MinMax.Generated.tt
@@ -284,8 +284,11 @@ foreach (var overload in new[] {
     new { selector = "Func<TSource, CancellationToken, ValueTask<" + t + ">>", invoke = "await _selector(e.Current, _cancellationToken).ConfigureAwait(false)" },
 })
 {
+    var isAsync = overload.invoke.StartsWith("await");
     var isDeepCancellation = overload.selector.Contains("CancellationToken");
-    var suffix = overload.invoke.StartsWith("await") ? "Await" : "";
+    var suffix = isAsync ? "Await" : "";
+    var visibility = isAsync ? "internal" : "public";
+    var core = isAsync ? "Core" : "";
 
     if (isDeepCancellation)
     {
@@ -295,7 +298,7 @@ foreach (var overload in new[] {
 <#
     }
 #>
-        public static ValueTask<<#=t#>> <#=m#><#=suffix#>Async<TSource>(this IAsyncEnumerable<TSource> source, <#=overload.selector#> selector, CancellationToken cancellationToken = default)
+        <#=visibility#> static ValueTask<<#=t#>> <#=m#><#=suffix#>Async<#=core#><TSource>(this IAsyncEnumerable<TSource> source, <#=overload.selector#> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/OrderBy.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/OrderBy.cs
index 34d2e8dd6c..93650da980 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/OrderBy.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/OrderBy.cs
@@ -13,44 +13,44 @@ public static partial class AsyncEnumerable
         public static IOrderedAsyncEnumerable<TSource> OrderBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, TKey> keySelector) =>
             new OrderedAsyncEnumerable<TSource, TKey>(source, keySelector, comparer: null, descending: false, parent: null);
 
-        public static IOrderedAsyncEnumerable<TSource> OrderByAwait<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) =>
+        internal static IOrderedAsyncEnumerable<TSource> OrderByAwaitCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) =>
             new OrderedAsyncEnumerableWithTask<TSource, TKey>(source, keySelector, comparer: null, descending: false, parent: null);
 
 #if !NO_DEEP_CANCELLATION
-        public static IOrderedAsyncEnumerable<TSource> OrderByAwaitWithCancellation<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) =>
+        internal static IOrderedAsyncEnumerable<TSource> OrderByAwaitWithCancellationCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) =>
             new OrderedAsyncEnumerableWithTaskAndCancellation<TSource, TKey>(source, keySelector, comparer: null, descending: false, parent: null);
 #endif
 
         public static IOrderedAsyncEnumerable<TSource> OrderBy<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, TKey> keySelector, IComparer<TKey> comparer) =>
             new OrderedAsyncEnumerable<TSource, TKey>(source, keySelector, comparer, descending: false, parent: null);
 
-        public static IOrderedAsyncEnumerable<TSource> OrderByAwait<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) =>
+        internal static IOrderedAsyncEnumerable<TSource> OrderByAwaitCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) =>
             new OrderedAsyncEnumerableWithTask<TSource, TKey>(source, keySelector, comparer, descending: false, parent: null);
 
 #if !NO_DEEP_CANCELLATION
-        public static IOrderedAsyncEnumerable<TSource> OrderByAwaitWithCancellation<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) =>
+        internal static IOrderedAsyncEnumerable<TSource> OrderByAwaitWithCancellationCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) =>
             new OrderedAsyncEnumerableWithTaskAndCancellation<TSource, TKey>(source, keySelector, comparer, descending: false, parent: null);
 #endif
 
         public static IOrderedAsyncEnumerable<TSource> OrderByDescending<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, TKey> keySelector) =>
             new OrderedAsyncEnumerable<TSource, TKey>(source, keySelector, comparer: null, descending: true, parent: null);
 
-        public static IOrderedAsyncEnumerable<TSource> OrderByDescendingAwait<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) =>
+        internal static IOrderedAsyncEnumerable<TSource> OrderByDescendingAwaitCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector) =>
             new OrderedAsyncEnumerableWithTask<TSource, TKey>(source, keySelector, comparer: null, descending: true, parent: null);
 
 #if !NO_DEEP_CANCELLATION
-        public static IOrderedAsyncEnumerable<TSource> OrderByDescendingAwaitWithCancellation<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) =>
+        internal static IOrderedAsyncEnumerable<TSource> OrderByDescendingAwaitWithCancellationCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector) =>
             new OrderedAsyncEnumerableWithTaskAndCancellation<TSource, TKey>(source, keySelector, comparer: null, descending: true, parent: null);
 #endif
 
         public static IOrderedAsyncEnumerable<TSource> OrderByDescending<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, TKey> keySelector, IComparer<TKey> comparer) =>
             new OrderedAsyncEnumerable<TSource, TKey>(source, keySelector, comparer, descending: true, parent: null);
 
-        public static IOrderedAsyncEnumerable<TSource> OrderByDescendingAwait<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) =>
+        internal static IOrderedAsyncEnumerable<TSource> OrderByDescendingAwaitCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) =>
             new OrderedAsyncEnumerableWithTask<TSource, TKey>(source, keySelector, comparer, descending: true, parent: null);
 
 #if !NO_DEEP_CANCELLATION
-        public static IOrderedAsyncEnumerable<TSource> OrderByDescendingAwaitWithCancellation<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) =>
+        internal static IOrderedAsyncEnumerable<TSource> OrderByDescendingAwaitWithCancellationCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer) =>
             new OrderedAsyncEnumerableWithTaskAndCancellation<TSource, TKey>(source, keySelector, comparer, descending: true, parent: null);
 #endif
 
@@ -62,7 +62,7 @@ public static IOrderedAsyncEnumerable<TSource> ThenBy<TSource, TKey>(this IOrder
             return source.CreateOrderedEnumerable(keySelector, comparer: null, descending: false);
         }
 
-        public static IOrderedAsyncEnumerable<TSource> ThenByAwait<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector)
+        internal static IOrderedAsyncEnumerable<TSource> ThenByAwaitCore<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -71,7 +71,7 @@ public static IOrderedAsyncEnumerable<TSource> ThenByAwait<TSource, TKey>(this I
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IOrderedAsyncEnumerable<TSource> ThenByAwaitWithCancellation<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector)
+        internal static IOrderedAsyncEnumerable<TSource> ThenByAwaitWithCancellationCore<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -88,7 +88,7 @@ public static IOrderedAsyncEnumerable<TSource> ThenBy<TSource, TKey>(this IOrder
             return source.CreateOrderedEnumerable(keySelector, comparer, descending: false);
         }
 
-        public static IOrderedAsyncEnumerable<TSource> ThenByAwait<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer)
+        internal static IOrderedAsyncEnumerable<TSource> ThenByAwaitCore<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -97,7 +97,7 @@ public static IOrderedAsyncEnumerable<TSource> ThenByAwait<TSource, TKey>(this I
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IOrderedAsyncEnumerable<TSource> ThenByAwaitWithCancellation<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer)
+        internal static IOrderedAsyncEnumerable<TSource> ThenByAwaitWithCancellationCore<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -114,7 +114,7 @@ public static IOrderedAsyncEnumerable<TSource> ThenByDescending<TSource, TKey>(t
             return source.CreateOrderedEnumerable(keySelector, comparer: null, descending: true);
         }
 
-        public static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwait<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector)
+        internal static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwaitCore<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -123,7 +123,7 @@ public static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwait<TSource, TK
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwaitWithCancellation<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector)
+        internal static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwaitWithCancellationCore<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -140,7 +140,7 @@ public static IOrderedAsyncEnumerable<TSource> ThenByDescending<TSource, TKey>(t
             return source.CreateOrderedEnumerable(keySelector, comparer, descending: true);
         }
 
-        public static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwait<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer)
+        internal static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwaitCore<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IComparer<TKey> comparer)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -149,7 +149,7 @@ public static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwait<TSource, TK
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwaitWithCancellation<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer)
+        internal static IOrderedAsyncEnumerable<TSource> ThenByDescendingAwaitWithCancellationCore<TSource, TKey>(this IOrderedAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IComparer<TKey> comparer)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Select.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Select.cs
index b84d1edc73..b1c5822584 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Select.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Select.cs
@@ -58,7 +58,7 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
 #endif
         }
 
-        public static IAsyncEnumerable<TResult> SelectAwait<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector)
+        internal static IAsyncEnumerable<TResult> SelectAwaitCore<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TResult>> selector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -77,7 +77,7 @@ public static IAsyncEnumerable<TResult> SelectAwait<TSource, TResult>(this IAsyn
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TResult> SelectAwaitWithCancellation<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector)
+        internal static IAsyncEnumerable<TResult> SelectAwaitWithCancellationCore<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TResult>> selector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -96,7 +96,7 @@ public static IAsyncEnumerable<TResult> SelectAwaitWithCancellation<TSource, TRe
         }
 #endif
 
-        public static IAsyncEnumerable<TResult> SelectAwait<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<TResult>> selector)
+        internal static IAsyncEnumerable<TResult> SelectAwaitCore<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<TResult>> selector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -126,7 +126,7 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TResult> SelectAwaitWithCancellation<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<TResult>> selector)
+        internal static IAsyncEnumerable<TResult> SelectAwaitWithCancellationCore<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<TResult>> selector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SelectMany.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SelectMany.cs
index eb209f270c..74a5a8dc39 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SelectMany.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SelectMany.cs
@@ -23,7 +23,7 @@ public static IAsyncEnumerable<TResult> SelectMany<TSource, TResult>(this IAsync
 
         // REVIEW: Should we keep these overloads that return ValueTask<IAsyncEnumerable<TResult>>? One could argue the selector is async twice.
 
-        public static IAsyncEnumerable<TResult> SelectManyAwait<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<IAsyncEnumerable<TResult>>> selector)
+        internal static IAsyncEnumerable<TResult> SelectManyAwaitCore<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<IAsyncEnumerable<TResult>>> selector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -34,7 +34,7 @@ public static IAsyncEnumerable<TResult> SelectManyAwait<TSource, TResult>(this I
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TResult> SelectManyAwaitWithCancellation<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<IAsyncEnumerable<TResult>>> selector)
+        internal static IAsyncEnumerable<TResult> SelectManyAwaitWithCancellationCore<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<IAsyncEnumerable<TResult>>> selector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -79,7 +79,7 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
 #endif
         }
 
-        public static IAsyncEnumerable<TResult> SelectManyAwait<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<IAsyncEnumerable<TResult>>> selector)
+        internal static IAsyncEnumerable<TResult> SelectManyAwaitCore<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<IAsyncEnumerable<TResult>>> selector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -114,7 +114,7 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TResult> SelectManyAwaitWithCancellation<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<IAsyncEnumerable<TResult>>> selector)
+        internal static IAsyncEnumerable<TResult> SelectManyAwaitWithCancellationCore<TSource, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<IAsyncEnumerable<TResult>>> selector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -178,7 +178,7 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
 #endif
         }
 
-        public static IAsyncEnumerable<TResult> SelectManyAwait<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, ValueTask<TResult>> resultSelector)
+        internal static IAsyncEnumerable<TResult> SelectManyAwaitCore<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, ValueTask<TResult>> resultSelector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -208,7 +208,7 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TResult> SelectManyAwaitWithCancellation<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, CancellationToken, ValueTask<TResult>> resultSelector)
+        internal static IAsyncEnumerable<TResult> SelectManyAwaitWithCancellationCore<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, CancellationToken, ValueTask<TResult>> resultSelector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -274,7 +274,7 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
 #endif
         }
 
-        public static IAsyncEnumerable<TResult> SelectManyAwait<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, ValueTask<TResult>> resultSelector)
+        internal static IAsyncEnumerable<TResult> SelectManyAwaitCore<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, ValueTask<TResult>> resultSelector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -311,7 +311,7 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TResult> SelectManyAwaitWithCancellation<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, CancellationToken, ValueTask<TResult>> resultSelector)
+        internal static IAsyncEnumerable<TResult> SelectManyAwaitWithCancellationCore<TSource, TCollection, TResult>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<IAsyncEnumerable<TCollection>>> collectionSelector, Func<TSource, TCollection, CancellationToken, ValueTask<TResult>> resultSelector)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Single.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Single.cs
index 609ed5885a..3babf8ec24 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Single.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Single.cs
@@ -85,7 +85,7 @@ static async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<TSource> SingleAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> SingleAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -122,7 +122,7 @@ static async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<TSource> SingleAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> SingleAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SingleOrDefault.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SingleOrDefault.cs
index b5ac28f153..00090c60a7 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SingleOrDefault.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SingleOrDefault.cs
@@ -85,7 +85,7 @@ async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSource, b
             }
         }
 
-        public static ValueTask<TSource> SingleOrDefaultAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> SingleOrDefaultAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -122,7 +122,7 @@ async ValueTask<TSource> Core(IAsyncEnumerable<TSource> _source, Func<TSource, V
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<TSource> SingleOrDefaultAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
+        internal static ValueTask<TSource> SingleOrDefaultAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SkipWhile.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SkipWhile.cs
index 46b968a06f..93190009c9 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SkipWhile.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/SkipWhile.cs
@@ -92,7 +92,7 @@ async IAsyncEnumerator<TSource> Core(CancellationToken cancellationToken)
 #endif
         }
 
-        public static IAsyncEnumerable<TSource> SkipWhileAwait<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate)
+        internal static IAsyncEnumerable<TSource> SkipWhileAwaitCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -130,7 +130,7 @@ async IAsyncEnumerator<TSource> Core(CancellationToken cancellationToken)
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TSource> SkipWhileAwaitWithCancellation<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate)
+        internal static IAsyncEnumerable<TSource> SkipWhileAwaitWithCancellationCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -168,7 +168,7 @@ async IAsyncEnumerator<TSource> Core(CancellationToken cancellationToken)
         }
 #endif
 
-        public static IAsyncEnumerable<TSource> SkipWhileAwait<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate)
+        internal static IAsyncEnumerable<TSource> SkipWhileAwaitCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -213,7 +213,7 @@ async IAsyncEnumerator<TSource> Core(CancellationToken cancellationToken)
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TSource> SkipWhileAwaitWithCancellation<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate)
+        internal static IAsyncEnumerable<TSource> SkipWhileAwaitWithCancellationCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Sum.Generated.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Sum.Generated.cs
index bb0f4da0d8..8d5f917ed2 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Sum.Generated.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Sum.Generated.cs
@@ -60,7 +60,7 @@ static async ValueTask<int> Core(IAsyncEnumerable<TSource> _source, Func<TSource
             }
         }
 
-        public static ValueTask<int> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<int> SumAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -88,7 +88,7 @@ static async ValueTask<int> Core(IAsyncEnumerable<TSource> _source, Func<TSource
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<int> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<int> SumAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -166,7 +166,7 @@ static async ValueTask<long> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
             }
         }
 
-        public static ValueTask<long> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<long> SumAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -194,7 +194,7 @@ static async ValueTask<long> Core(IAsyncEnumerable<TSource> _source, Func<TSourc
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<long> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<long> SumAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -266,7 +266,7 @@ static async ValueTask<float> Core(IAsyncEnumerable<TSource> _source, Func<TSour
             }
         }
 
-        public static ValueTask<float> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float> SumAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -291,7 +291,7 @@ static async ValueTask<float> Core(IAsyncEnumerable<TSource> _source, Func<TSour
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<float> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float> SumAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -360,7 +360,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
             }
         }
 
-        public static ValueTask<double> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double> SumAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -385,7 +385,7 @@ static async ValueTask<double> Core(IAsyncEnumerable<TSource> _source, Func<TSou
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<double> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double> SumAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -454,7 +454,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<decimal> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal> SumAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -479,7 +479,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<decimal> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal> SumAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -554,7 +554,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<int?> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<int?> SumAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -582,7 +582,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<int?> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<int?> SumAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<int?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -660,7 +660,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<long?> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<long?> SumAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -688,7 +688,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<long?> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<long?> SumAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<long?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -760,7 +760,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<float?> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float?> SumAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -785,7 +785,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<float?> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<float?> SumAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<float?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -854,7 +854,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<double?> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double?> SumAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -879,7 +879,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<double?> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<double?> SumAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<double?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -948,7 +948,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
             }
         }
 
-        public static ValueTask<decimal?> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal?> SumAwaitAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -973,7 +973,7 @@ static async ValueTask<decimal> Core(IAsyncEnumerable<TSource> _source, Func<TSo
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<decimal?> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<decimal?> SumAwaitWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<decimal?>> selector, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Sum.Generated.tt b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Sum.Generated.tt
index 8233e40832..0604f6a48a 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Sum.Generated.tt
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Sum.Generated.tt
@@ -111,7 +111,8 @@ else
             }
         }
 
-        public static ValueTask<<#=o.type#>> SumAwaitAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<<#=o.type#>>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<<#=o.type#>> SumAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<<#=o.type#>>> selector, CancellationToken cancellationToken = default)
+
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -152,7 +153,8 @@ else
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<<#=o.type#>> SumAwaitWithCancellationAsync<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<<#=o.type#>>> selector, CancellationToken cancellationToken = default)
+        internal static ValueTask<<#=o.type#>> SumWithCancellationAsyncCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<<#=o.type#>>> selector, CancellationToken cancellationToken = default)
+
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/TakeWhile.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/TakeWhile.cs
index 9ddd1a2c31..cb31144c20 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/TakeWhile.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/TakeWhile.cs
@@ -72,7 +72,7 @@ async IAsyncEnumerator<TSource> Core(CancellationToken cancellationToken)
 #endif
         }
 
-        public static IAsyncEnumerable<TSource> TakeWhileAwait<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate)
+        internal static IAsyncEnumerable<TSource> TakeWhileAwaitCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -100,7 +100,7 @@ async IAsyncEnumerator<TSource> Core(CancellationToken cancellationToken)
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TSource> TakeWhileAwaitWithCancellation<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate)
+        internal static IAsyncEnumerable<TSource> TakeWhileAwaitWithCancellationCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -128,7 +128,7 @@ async IAsyncEnumerator<TSource> Core(CancellationToken cancellationToken)
         }
 #endif
 
-        public static IAsyncEnumerable<TSource> TakeWhileAwait<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate)
+        internal static IAsyncEnumerable<TSource> TakeWhileAwaitCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -163,7 +163,7 @@ async IAsyncEnumerator<TSource> Core(CancellationToken cancellationToken)
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TSource> TakeWhileAwaitWithCancellation<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate)
+        internal static IAsyncEnumerable<TSource> TakeWhileAwaitWithCancellationCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ToDictionary.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ToDictionary.cs
index f91dc4fea1..8e5bdb2a91 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ToDictionary.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ToDictionary.cs
@@ -37,10 +37,10 @@ static async ValueTask<Dictionary<TKey, TSource>> Core(IAsyncEnumerable<TSource>
             }
         }
 
-        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAwaitAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, CancellationToken cancellationToken = default) =>
-            ToDictionaryAwaitAsync<TSource, TKey>(source, keySelector, comparer: null, cancellationToken);
+        internal static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAwaitAsyncCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, CancellationToken cancellationToken = default) =>
+            ToDictionaryAwaitAsyncCore<TSource, TKey>(source, keySelector, comparer: null, cancellationToken);
 
-        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAwaitAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
+        internal static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAwaitAsyncCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -65,10 +65,10 @@ static async ValueTask<Dictionary<TKey, TSource>> Core(IAsyncEnumerable<TSource>
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAwaitWithCancellationAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, CancellationToken cancellationToken = default) =>
-            ToDictionaryAwaitWithCancellationAsync(source, keySelector, comparer: null, cancellationToken);
+        internal static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAwaitWithCancellationAsyncCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, CancellationToken cancellationToken = default) =>
+            ToDictionaryAwaitWithCancellationAsyncCore(source, keySelector, comparer: null, cancellationToken);
 
-        public static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAwaitWithCancellationAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
+        internal static ValueTask<Dictionary<TKey, TSource>> ToDictionaryAwaitWithCancellationAsyncCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -123,10 +123,10 @@ static async ValueTask<Dictionary<TKey, TElement>> Core(IAsyncEnumerable<TSource
             }
         }
 
-        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAwaitAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken = default) =>
-            ToDictionaryAwaitAsync<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer: null, cancellationToken);
+        internal static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAwaitAsyncCore<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken = default) =>
+            ToDictionaryAwaitAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer: null, cancellationToken);
 
-        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAwaitAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
+        internal static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAwaitAsyncCore<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -154,10 +154,10 @@ static async ValueTask<Dictionary<TKey, TElement>> Core(IAsyncEnumerable<TSource
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAwaitWithCancellationAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken = default) =>
-            ToDictionaryAwaitWithCancellationAsync(source, keySelector, elementSelector, comparer: null, cancellationToken);
+        internal static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAwaitWithCancellationAsyncCore<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken = default) =>
+            ToDictionaryAwaitWithCancellationAsyncCore(source, keySelector, elementSelector, comparer: null, cancellationToken);
 
-        public static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAwaitWithCancellationAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
+        internal static ValueTask<Dictionary<TKey, TElement>> ToDictionaryAwaitWithCancellationAsyncCore<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ToLookup.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ToLookup.cs
index eaa65d9690..681252dc5a 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ToLookup.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/ToLookup.cs
@@ -28,10 +28,10 @@ static async ValueTask<ILookup<TKey, TSource>> Core(IAsyncEnumerable<TSource> _s
             }
         }
 
-        public static ValueTask<ILookup<TKey, TSource>> ToLookupAwaitAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, CancellationToken cancellationToken = default) =>
-            ToLookupAwaitAsync<TSource, TKey>(source, keySelector, comparer:null, cancellationToken);
+        internal static ValueTask<ILookup<TKey, TSource>> ToLookupAwaitAsyncCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, CancellationToken cancellationToken = default) =>
+            ToLookupAwaitAsyncCore<TSource, TKey>(source, keySelector, comparer:null, cancellationToken);
 
-        public static ValueTask<ILookup<TKey, TSource>> ToLookupAwaitAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
+        internal static ValueTask<ILookup<TKey, TSource>> ToLookupAwaitAsyncCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -47,10 +47,10 @@ async ValueTask<ILookup<TKey, TSource>> Core(IAsyncEnumerable<TSource> _source,
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<ILookup<TKey, TSource>> ToLookupAwaitWithCancellationAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, CancellationToken cancellationToken = default) =>
-            ToLookupAwaitWithCancellationAsync(source, keySelector, comparer: null, cancellationToken);
+        internal static ValueTask<ILookup<TKey, TSource>> ToLookupAwaitWithCancellationAsyncCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, CancellationToken cancellationToken = default) =>
+            ToLookupAwaitWithCancellationAsyncCore(source, keySelector, comparer: null, cancellationToken);
 
-        public static ValueTask<ILookup<TKey, TSource>> ToLookupAwaitWithCancellationAsync<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
+        internal static ValueTask<ILookup<TKey, TSource>> ToLookupAwaitWithCancellationAsyncCore<TSource, TKey>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -86,10 +86,10 @@ static async ValueTask<ILookup<TKey, TElement>> Core(IAsyncEnumerable<TSource> _
             }
         }
 
-        public static ValueTask<ILookup<TKey, TElement>> ToLookupAwaitAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken = default) =>
-            ToLookupAwaitAsync<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer: null, cancellationToken);
+        internal static ValueTask<ILookup<TKey, TElement>> ToLookupAwaitAsyncCore<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken = default) =>
+            ToLookupAwaitAsyncCore<TSource, TKey, TElement>(source, keySelector, elementSelector, comparer: null, cancellationToken);
 
-        public static ValueTask<ILookup<TKey, TElement>> ToLookupAwaitAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
+        internal static ValueTask<ILookup<TKey, TElement>> ToLookupAwaitAsyncCore<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<TKey>> keySelector, Func<TSource, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -107,10 +107,10 @@ static async ValueTask<ILookup<TKey, TElement>> Core(IAsyncEnumerable<TSource> _
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static ValueTask<ILookup<TKey, TElement>> ToLookupAwaitWithCancellationAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken = default) =>
-            ToLookupAwaitWithCancellationAsync(source, keySelector, elementSelector, comparer: null, cancellationToken);
+        internal static ValueTask<ILookup<TKey, TElement>> ToLookupAwaitWithCancellationAsyncCore<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, CancellationToken cancellationToken = default) =>
+            ToLookupAwaitWithCancellationAsyncCore(source, keySelector, elementSelector, comparer: null, cancellationToken);
 
-        public static ValueTask<ILookup<TKey, TElement>> ToLookupAwaitWithCancellationAsync<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
+        internal static ValueTask<ILookup<TKey, TElement>> ToLookupAwaitWithCancellationAsyncCore<TSource, TKey, TElement>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<TKey>> keySelector, Func<TSource, CancellationToken, ValueTask<TElement>> elementSelector, IEqualityComparer<TKey> comparer, CancellationToken cancellationToken = default)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Where.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Where.cs
index 2c307bd2d3..f329431be9 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Where.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Where.cs
@@ -59,7 +59,7 @@ async IAsyncEnumerator<TSource> Core(CancellationToken cancellationToken)
 #endif
         }
 
-        public static IAsyncEnumerable<TSource> WhereAwait<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate)
+        internal static IAsyncEnumerable<TSource> WhereAwaitCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, ValueTask<bool>> predicate)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -76,7 +76,7 @@ public static IAsyncEnumerable<TSource> WhereAwait<TSource>(this IAsyncEnumerabl
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TSource> WhereAwaitWithCancellation<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate)
+        internal static IAsyncEnumerable<TSource> WhereAwaitWithCancellationCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, CancellationToken, ValueTask<bool>> predicate)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -93,7 +93,7 @@ public static IAsyncEnumerable<TSource> WhereAwaitWithCancellation<TSource>(this
         }
 #endif
 
-        public static IAsyncEnumerable<TSource> WhereAwait<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate)
+        internal static IAsyncEnumerable<TSource> WhereAwaitCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, ValueTask<bool>> predicate)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
@@ -126,7 +126,7 @@ async IAsyncEnumerator<TSource> Core(CancellationToken cancellationToken)
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TSource> WhereAwaitWithCancellation<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate)
+        internal static IAsyncEnumerable<TSource> WhereAwaitWithCancellationCore<TSource>(this IAsyncEnumerable<TSource> source, Func<TSource, int, CancellationToken, ValueTask<bool>> predicate)
         {
             if (source == null)
                 throw Error.ArgumentNull(nameof(source));
diff --git a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Zip.cs b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Zip.cs
index cef5bf0947..182ebae643 100644
--- a/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Zip.cs
+++ b/Ix.NET/Source/System.Linq.Async/System/Linq/Operators/Zip.cs
@@ -71,7 +71,7 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
 #endif
         }
 
-        public static IAsyncEnumerable<TResult> ZipAwait<TFirst, TSecond, TResult>(this IAsyncEnumerable<TFirst> first, IAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, ValueTask<TResult>> selector)
+        internal static IAsyncEnumerable<TResult> ZipAwaitCore<TFirst, TSecond, TResult>(this IAsyncEnumerable<TFirst> first, IAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, ValueTask<TResult>> selector)
         {
             if (first == null)
                 throw Error.ArgumentNull(nameof(first));
@@ -102,7 +102,7 @@ async IAsyncEnumerator<TResult> Core(CancellationToken cancellationToken)
         }
 
 #if !NO_DEEP_CANCELLATION
-        public static IAsyncEnumerable<TResult> ZipAwaitWithCancellation<TFirst, TSecond, TResult>(this IAsyncEnumerable<TFirst> first, IAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, CancellationToken, ValueTask<TResult>> selector)
+        internal static IAsyncEnumerable<TResult> ZipAwaitWithCancellationCore<TFirst, TSecond, TResult>(this IAsyncEnumerable<TFirst> first, IAsyncEnumerable<TSecond> second, Func<TFirst, TSecond, CancellationToken, ValueTask<TResult>> selector)
         {
             if (first == null)
                 throw Error.ArgumentNull(nameof(first));