Remove unsupported namespaces

Signed-off-by: Thomas Farr <tsfarr@amazon.com>

CHANGELOG.md

@@ -30,6 +30,8 @@ This section is for maintaining a changelog for all breaking changes for the cli
 - Deprecate RestClientTransport ([#536](https://github.com/opensearch-project/opensearch-java/pull/536))
 
 ### Removed
+- Removed the `features` and `shutdown` namespaces as they're not supported by OpenSearch ([#]())
+- Removed the `indices.diskUsage` operation as it's not supported by OpenSearch ([#]())
 
 ### Fixed
 - Fix version and build ([#254](https://github.com/opensearch-project/opensearch-java/pull/254))

java-client/src/main/java/org/opensearch/client/opensearch/OpenSearchAsyncClient.java

@@ -119,11 +119,8 @@
 import org.opensearch.client.opensearch.core.pit.DeletePitResponse;
 import org.opensearch.client.opensearch.core.pit.ListAllPitRequest;
 import org.opensearch.client.opensearch.core.pit.ListAllPitResponse;
-import org.opensearch.client.opensearch.features.OpenSearchFeaturesAsyncClient;
 import org.opensearch.client.opensearch.ingest.OpenSearchIngestAsyncClient;
 import org.opensearch.client.opensearch.nodes.OpenSearchNodesAsyncClient;
-import org.opensearch.client.opensearch.shutdown.OpenSearchShutdownAsyncClient;
-import org.opensearch.client.opensearch.snapshot.OpenSearchSnapshotAsyncClient;
 import org.opensearch.client.transport.JsonEndpoint;
 import org.opensearch.client.transport.OpenSearchTransport;
 import org.opensearch.client.transport.TransportOptions;
@@ -158,10 +155,6 @@ public OpenSearchClusterAsyncClient cluster() {
         return new OpenSearchClusterAsyncClient(this.transport, this.transportOptions);
     }
 
-    public OpenSearchFeaturesAsyncClient features() {
-        return new OpenSearchFeaturesAsyncClient(this.transport, this.transportOptions);
-    }
-
     public OpenSearchIngestAsyncClient ingest() {
         return new OpenSearchIngestAsyncClient(this.transport, this.transportOptions);
     }
@@ -170,14 +163,6 @@ public OpenSearchNodesAsyncClient nodes() {
         return new OpenSearchNodesAsyncClient(this.transport, this.transportOptions);
     }
 
-    public OpenSearchShutdownAsyncClient shutdown() {
-        return new OpenSearchShutdownAsyncClient(this.transport, this.transportOptions);
-    }
-
-    public OpenSearchSnapshotAsyncClient snapshot() {
-        return new OpenSearchSnapshotAsyncClient(this.transport, this.transportOptions);
-    }
-
     // ----- Endpoint: bulk
 
     /**

java-client/src/main/java/org/opensearch/client/opensearch/OpenSearchClient.java

@@ -118,12 +118,9 @@
 import org.opensearch.client.opensearch.core.pit.DeletePitResponse;
 import org.opensearch.client.opensearch.core.pit.ListAllPitRequest;
 import org.opensearch.client.opensearch.core.pit.ListAllPitResponse;
-import org.opensearch.client.opensearch.features.OpenSearchFeaturesClient;
 import org.opensearch.client.opensearch.generic.OpenSearchGenericClient;
 import org.opensearch.client.opensearch.ingest.OpenSearchIngestClient;
 import org.opensearch.client.opensearch.nodes.OpenSearchNodesClient;
-import org.opensearch.client.opensearch.shutdown.OpenSearchShutdownClient;
-import org.opensearch.client.opensearch.snapshot.OpenSearchSnapshotClient;
 import org.opensearch.client.transport.JsonEndpoint;
 import org.opensearch.client.transport.OpenSearchTransport;
 import org.opensearch.client.transport.TransportOptions;
@@ -161,10 +158,6 @@ public OpenSearchClusterClient cluster() {
         return new OpenSearchClusterClient(this.transport, this.transportOptions);
     }
 
-    public OpenSearchFeaturesClient features() {
-        return new OpenSearchFeaturesClient(this.transport, this.transportOptions);
-    }
-
     public OpenSearchIngestClient ingest() {
         return new OpenSearchIngestClient(this.transport, this.transportOptions);
     }
@@ -173,14 +166,6 @@ public OpenSearchNodesClient nodes() {
         return new OpenSearchNodesClient(this.transport, this.transportOptions);
     }
 
-    public OpenSearchShutdownClient shutdown() {
-        return new OpenSearchShutdownClient(this.transport, this.transportOptions);
-    }
-
-    public OpenSearchSnapshotClient snapshot() {
-        return new OpenSearchSnapshotClient(this.transport, this.transportOptions);
-    }
-
     // ----- Endpoint: bulk
 
     /**