Client: Deprecate many argument performRequest (#30315)

Deprecate the many arguments versions of `performRequest` and
`performRequestAsync` in favor of the `Request` object flavored variants
introduced in #29623. We'll be dropping the many arguments variants in
7.0 because they make it difficult to add new features in a backwards
compatible way and they create a *ton* of intellisense noise.

client/rest/src/main/java/org/elasticsearch/client/RestClient.java

@@ -210,7 +210,9 @@ public class RestClient implements Closeable {
      * @throws IOException in case of a problem or the connection was aborted
      * @throws ClientProtocolException in case of an http protocol error
      * @throws ResponseException in case Elasticsearch responded with a status code that indicated an error
+     * @deprecated prefer {@link #performRequest(Request)}
      */
+    @Deprecated
     public Response performRequest(String method, String endpoint, Header... headers) throws IOException {
         Request request = new Request(method, endpoint);
         request.setHeaders(headers);
@@ -229,7 +231,9 @@ public class RestClient implements Closeable {
      * @throws IOException in case of a problem or the connection was aborted
      * @throws ClientProtocolException in case of an http protocol error
      * @throws ResponseException in case Elasticsearch responded with a status code that indicated an error
+     * @deprecated prefer {@link #performRequest(Request)}
      */
+    @Deprecated
     public Response performRequest(String method, String endpoint, Map<String, String> params, Header... headers) throws IOException {
         Request request = new Request(method, endpoint);
         addParameters(request, params);
@@ -252,7 +256,9 @@ public class RestClient implements Closeable {
      * @throws IOException in case of a problem or the connection was aborted
      * @throws ClientProtocolException in case of an http protocol error
      * @throws ResponseException in case Elasticsearch responded with a status code that indicated an error
+     * @deprecated prefer {@link #performRequest(Request)}
      */
+    @Deprecated
     public Response performRequest(String method, String endpoint, Map<String, String> params,
                                    HttpEntity entity, Header... headers) throws IOException {
         Request request = new Request(method, endpoint);
@@ -289,7 +295,9 @@ public class RestClient implements Closeable {
      * @throws IOException in case of a problem or the connection was aborted
      * @throws ClientProtocolException in case of an http protocol error
      * @throws ResponseException in case Elasticsearch responded with a status code that indicated an error
+     * @deprecated prefer {@link #performRequest(Request)}
      */
+    @Deprecated
     public Response performRequest(String method, String endpoint, Map<String, String> params,
                                    HttpEntity entity, HttpAsyncResponseConsumerFactory httpAsyncResponseConsumerFactory,
                                    Header... headers) throws IOException {
@@ -310,7 +318,9 @@ public class RestClient implements Closeable {
      * @param endpoint the path of the request (without host and port)
      * @param responseListener the {@link ResponseListener} to notify when the request is completed or fails
      * @param headers the optional request headers
+     * @deprecated prefer {@link #performRequestAsync(Request, ResponseListener)}
      */
+    @Deprecated
     public void performRequestAsync(String method, String endpoint, ResponseListener responseListener, Header... headers) {
         Request request;
         try {
@@ -333,7 +343,9 @@ public class RestClient implements Closeable {
      * @param params the query_string parameters
      * @param responseListener the {@link ResponseListener} to notify when the request is completed or fails
      * @param headers the optional request headers
+     * @deprecated prefer {@link #performRequestAsync(Request, ResponseListener)}
      */
+    @Deprecated
     public void performRequestAsync(String method, String endpoint, Map<String, String> params,
                                     ResponseListener responseListener, Header... headers) {
         Request request;
@@ -361,7 +373,9 @@ public class RestClient implements Closeable {
      * @param entity the body of the request, null if not applicable
      * @param responseListener the {@link ResponseListener} to notify when the request is completed or fails
      * @param headers the optional request headers
+     * @deprecated prefer {@link #performRequestAsync(Request, ResponseListener)}
      */
+    @Deprecated
     public void performRequestAsync(String method, String endpoint, Map<String, String> params,
                                     HttpEntity entity, ResponseListener responseListener, Header... headers) {
         Request request;
@@ -394,7 +408,9 @@ public class RestClient implements Closeable {
      * connection on the client side.
      * @param responseListener the {@link ResponseListener} to notify when the request is completed or fails
      * @param headers the optional request headers
+     * @deprecated prefer {@link #performRequestAsync(Request, ResponseListener)}
      */
+    @Deprecated
     public void performRequestAsync(String method, String endpoint, Map<String, String> params,
                                     HttpEntity entity, HttpAsyncResponseConsumerFactory httpAsyncResponseConsumerFactory,
                                     ResponseListener responseListener, Header... headers) {

docs/CHANGELOG.asciidoc

@@ -139,8 +139,11 @@ coming[6.4.0]
 //[float]
 //=== Breaking Java Changes
 
-//[float]
+[float]
-//=== Deprecations
+=== Deprecations
+
+Deprecated multi-argument versions of the request methods in the RestClient.
+Prefer the "Request" object flavored methods. ({pull}30315[#30315])
 
 [float]
 === New Features
@@ -157,8 +160,8 @@ analysis module.  ({pull}30397[#30397])
 
 {ref-64}/breaking_64_api_changes.html#copy-source-settings-on-resize[Allow copying source settings on index resize operations] ({pull}30255[#30255])
 
-Added new "Request" object flavored request methods. Prefer these instead of the
+Added new "Request" object flavored request methods in the RestClient. Prefer
-multi-argument versions. ({pull}29623[#29623])
+these instead of the multi-argument versions. ({pull}29623[#29623])
 
 The cluster state listener to decide if watcher should be
 stopped/started/paused now runs far less code in an executor but is more