Update types that need the empty request fix

Author: swallez

java-client/src/main/java/co/elastic/clients/elasticsearch/core/CountRequest.java

@@ -66,7 +66,7 @@
 
 /**
  * Count search results. Get the number of documents matching a query.
- * 
+ *
  * @see <a href="../doc-files/api-spec.html#_global.count.Request">API
  *      specification</a>
  */
@@ -760,5 +760,6 @@ protected static void setupCountRequestDeserializer(ObjectDeserializer<CountRequ
 				}
 				return params;
 
-			}, SimpleEndpoint.emptyMap(), true, CountResponse._DESERIALIZER);
+			}, SimpleEndpoint.emptyMap(), SimpleEndpoint.nonEmptyJsonObject(SimpleEndpoint.returnSelf()),
+			CountResponse._DESERIALIZER);
 }

java-client/src/main/java/co/elastic/clients/elasticsearch/indices/ValidateQueryRequest.java

@@ -698,5 +698,6 @@ protected static void setupValidateQueryRequestDeserializer(ObjectDeserializer<V
 				}
 				return params;
 
-			}, SimpleEndpoint.emptyMap(), true, ValidateQueryResponse._DESERIALIZER);
+			}, SimpleEndpoint.emptyMap(), SimpleEndpoint.nonEmptyJsonObject(SimpleEndpoint.returnSelf()),
+			ValidateQueryResponse._DESERIALIZER);
 }

java-client/src/test/java/co/elastic/clients/transport/endpoints/SimpleEndpointTest.java

@@ -0,0 +1,4 @@
+package co.elastic.clients.transport.endpoints;
+
+public class SimpleEndpointTest {
+}