Improve JSON converter public API

CHANGELOG.md

@@ -24,6 +24,7 @@ All Notable changes to `Csv` will be documented in this file
 
 - `Cast*` methods accept more input type to improve Denormalization usage when `Reader::addFormatter` is used or when the collection contains data other than string and `null`.
 - `Stream::getSize` is added to the internal `Stream` class
+- `Stream::getContents` is added to the internal `Stream` class
 - `MapIterator::toIterator` is added to the internal class `MapIterator` class to convert any `iterable` into an `Iterator`.
 - Casting a CSV to an `array` it now will be a collection of array instead of a simple `array`.
 

docs/9.0/converter/json.md

@@ -15,16 +15,37 @@ the converter.
 <p class="message-warning">Because we are building a <code>JSON</code> structure, the <code>JsonConverter</code> object
 throws generic <code>SPL Exception</code> instead of <code>League\Csv\Exception</code>.</p>
 
-### JsonConverter::addFlags and JsonConverter::removeFlags
+### JsonConverter::withFlags and JsonConverter::withoutFlags
 
 ```php
-public JsonConverter::addFlags(int ...$flag): self
-public JsonConverter::removeFlags(int ...$flag): self
+public JsonConverter::withFlags(int ...$flag): self
+public JsonConverter::withoutFlags(int ...$flag): self
 ```
 
 This method sets the JSON flags to be used during conversion. The method handles all the
 flags supported by PHP `json_encode` function.
 
+If you prefer a more expressive way for setting the flags you can use `with*` and `without*` methods
+whose name are derived from PHP JSON constants.
+
+```php
+$converter = JsonConverter::create()
+    ->withFlags(JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES, JSON_FORCE_OBJECT)
+    ->withoutFlags(JSON_HEX_QUOT);
+
+//is equivalent to
+
+$converter = JsonConverter::create()
+    ->withPrettyPrint()
+    ->withUnescapedSlashes()
+    ->withForceObject()
+    ->withoutHexQuot();
+```
+
+<p class="message-notice">Because we are converting one record at a time, the class always uses <code>JSON_THROW_ON_ERROR</code>
+to stop the collection conversion. As such adding or removing the flag using the methods describe here before will
+have no effect on its usage, the flag is <strong>ALWAYS</strong> set.</p>
+
 ### JsonConverter::depth
 
 ```php
@@ -52,7 +73,7 @@ public JsonConverter::formatter(?callback $formatter): mixed
 
 This method allow to apply a callback prior to `json_encode` your collection individual item.
 Since the encoder does not rely on PHP's `JsonSerializable` interface but on PHP's `iterable`
-structure. The expected conversion may differ to what you expect. This callback allows you to
+structure. The resulting conversion may differ to what you expect. This callback allows you to
 specify how each item will be converted. The formatter should return a type that can be handled
 by PHP `json_encode` function.
 
@@ -81,7 +102,8 @@ $document->setHeaderOffset(0);
 
 CharsetConverter::addTo($document, 'iso-8859-15', 'utf-8');
 $converter = JsonConverter::create()
-    ->addFlags(JSON_PRETTY_PRINT, JSON_UNESCAPED_SLASHES)
+    ->withPrettyPrint()
+    ->withUnescapedSlashes()
     ->depth(2)
     ->indentSize(2)
     ->formatter(function (array $row) {

docs/9.0/reader/index.md

@@ -324,6 +324,10 @@ found records are returned as a [ResultSet](/9.0/reader/resultset) object.
 
 ### Json serialization
 
+<p class="message-info">A dedicated <code>JsonConverter</code> class is added in version <code>9.17.0</code>
+to help <a href="/9.0/converter/json/">converting CSV into proper JSON document</a> without consuming
+too much memory. It is the recommended way to convert to JSON.</p>
+
 The `Reader` class implements the `JsonSerializable` interface. As such you can use the `json_encode`
 function directly on the instantiated object. The interface is implemented using PHP's
 `iterator_array` on the `Reader::getRecords` method. As such, the returned `JSON`

docs/9.0/reader/resultset.md

@@ -21,6 +21,10 @@ found records are returned as a [ResultSet](/9.0/reader/resultset) object.
 
 ### Json serialization
 
+<p class="message-info">A dedicated <code>JsonConverter</code> class is added in version <code>9.17.0</code>
+to help <a href="/9.0/converter/json/">converting ResultSet into proper JSON document</a> without consuming
+too much memory. It is the recommended way to convert to JSON.</p>
+
 The `ResultSet` class implements the `JsonSerializable` interface. As such you can use the `json_encode`
 function directly on the instantiated object. The interface is implemented  using PHP's `iterator_array`
 on the `ResultSet::getRecords` method. As such, the returned `JSON` string data is affected by the