diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/GetAliasesResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/GetAliasesResponse.java
index 26bdcd2d267..12791884d1a 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/GetAliasesResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/GetAliasesResponse.java
@@ -20,7 +20,6 @@
 package org.elasticsearch.client;
 
 import org.elasticsearch.ElasticsearchException;
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.cluster.metadata.AliasMetaData;
 import org.elasticsearch.common.xcontent.StatusToXContentObject;
 import org.elasticsearch.common.xcontent.ToXContent;
@@ -47,7 +46,7 @@ import static org.elasticsearch.common.xcontent.XContentParserUtils.ensureExpect
  * We would usually throw such exception, but we configure the client to not throw for 404 to support the case above, hence we also not
  * throw in case an index is not found, although it is a hard error that doesn't come back with aliases.
  */
-public class GetAliasesResponse extends ActionResponse implements StatusToXContentObject {
+public class GetAliasesResponse implements StatusToXContentObject {
 
     private final RestStatus status;
     private final String error;
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/SyncedFlushResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/SyncedFlushResponse.java
index ba42914d6ad..303e8328d08 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/SyncedFlushResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/SyncedFlushResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.ParsingException;
 import org.elasticsearch.common.xcontent.ConstructingObjectParser;
@@ -40,7 +39,7 @@ import static org.elasticsearch.common.xcontent.ConstructingObjectParser.constru
 import static org.elasticsearch.common.xcontent.ConstructingObjectParser.optionalConstructorArg;
 import static org.elasticsearch.common.xcontent.XContentParserUtils.ensureExpectedToken;
 
-public class SyncedFlushResponse extends ActionResponse implements ToXContentObject {
+public class SyncedFlushResponse implements ToXContentObject {
 
     public static final String SHARDS_FIELD = "_shards";
 
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/core/CountResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/core/CountResponse.java
index f97f79127e6..9c309772e3d 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/core/CountResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/core/CountResponse.java
@@ -19,7 +19,6 @@
 
 package org.elasticsearch.client.core;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.action.search.ShardSearchFailure;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.XContentParser;
@@ -35,7 +34,7 @@ import static org.elasticsearch.common.xcontent.XContentParserUtils.ensureExpect
 /**
  * A response to _count API request.
  */
-public final class CountResponse extends ActionResponse {
+public final class CountResponse {
 
     static final ParseField COUNT = new ParseField("count");
     static final ParseField TERMINATED_EARLY = new ParseField("terminated_early");
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/graph/GraphExploreRequest.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/graph/GraphExploreRequest.java
index 3040b8a121c..5a0a4c2a920 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/graph/GraphExploreRequest.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/graph/GraphExploreRequest.java
@@ -23,8 +23,6 @@ import org.elasticsearch.action.support.IndicesOptions;
 import org.elasticsearch.client.Validatable;
 import org.elasticsearch.client.ValidationException;
 import org.elasticsearch.common.Strings;
-import org.elasticsearch.common.io.stream.StreamInput;
-import org.elasticsearch.common.io.stream.StreamOutput;
 import org.elasticsearch.common.unit.TimeValue;
 import org.elasticsearch.common.xcontent.ToXContentObject;
 import org.elasticsearch.common.xcontent.XContentBuilder;
@@ -313,17 +311,6 @@ public class GraphExploreRequest implements IndicesRequest.Replaceable, ToXConte
         public float getBoost() {
             return boost;
         }
-
-        void readFrom(StreamInput in) throws IOException {
-            this.term = in.readString();
-            this.boost = in.readFloat();
-        }
-
-        void writeTo(StreamOutput out) throws IOException {
-            out.writeString(term);
-            out.writeFloat(boost);
-        }
-
     }
 
     @Override
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/AbstractResultResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/AbstractResultResponse.java
index 1b609797dd6..8fff53adfa7 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/AbstractResultResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/AbstractResultResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.ToXContent;
 import org.elasticsearch.common.xcontent.ToXContentObject;
@@ -32,7 +31,7 @@ import java.util.Objects;
 /**
  * Abstract class that provides a list of results and their count.
  */
-public abstract class AbstractResultResponse<T extends ToXContent> extends ActionResponse implements ToXContentObject {
+public abstract class AbstractResultResponse<T extends ToXContent> implements ToXContentObject {
 
     public static final ParseField COUNT = new ParseField("count");
 
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/CloseJobResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/CloseJobResponse.java
index 2ac1e0faee3..a30a0a4b15f 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/CloseJobResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/CloseJobResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.ConstructingObjectParser;
 import org.elasticsearch.common.xcontent.ToXContentObject;
@@ -31,7 +30,7 @@ import java.util.Objects;
 /**
  * Response indicating if the Job(s) closed or not
  */
-public class CloseJobResponse extends ActionResponse implements ToXContentObject {
+public class CloseJobResponse implements ToXContentObject {
 
     private static final ParseField CLOSED = new ParseField("closed");
 
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/DeleteExpiredDataResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/DeleteExpiredDataResponse.java
index 7a9ecbde325..3917982c1fd 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/DeleteExpiredDataResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/DeleteExpiredDataResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.ConstructingObjectParser;
 import org.elasticsearch.common.xcontent.ToXContent;
@@ -33,7 +32,7 @@ import java.util.Objects;
 /**
  * A response acknowledging the deletion of expired data
  */
-public class DeleteExpiredDataResponse extends ActionResponse implements ToXContentObject {
+public class DeleteExpiredDataResponse implements ToXContentObject {
 
     private static final ParseField DELETED = new ParseField("deleted");
 
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/DeleteJobResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/DeleteJobResponse.java
index f1487c8c276..7b284f84dd6 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/DeleteJobResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/DeleteJobResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.common.Nullable;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.ConstructingObjectParser;
@@ -35,7 +34,7 @@ import java.util.Objects;
  * Response object that contains the acknowledgement or the task id
  * depending on whether the delete job action was requested to wait for completion.
  */
-public class DeleteJobResponse extends ActionResponse implements ToXContentObject {
+public class DeleteJobResponse implements ToXContentObject {
 
     private static final ParseField ACKNOWLEDGED = new ParseField("acknowledged");
     private static final ParseField TASK = new ParseField("task");
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/FlushJobResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/FlushJobResponse.java
index 048b07b504a..f680359a938 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/FlushJobResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/FlushJobResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.common.Nullable;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.ConstructingObjectParser;
@@ -33,7 +32,7 @@ import java.util.Objects;
 /**
  * Response object containing flush acknowledgement and additional data
  */
-public class FlushJobResponse extends ActionResponse implements ToXContentObject {
+public class FlushJobResponse implements ToXContentObject {
 
     public static final ParseField FLUSHED = new ParseField("flushed");
     public static final ParseField LAST_FINALIZED_BUCKET_END = new ParseField("last_finalized_bucket_end");
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/ForecastJobResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/ForecastJobResponse.java
index b45275c5e59..418f5fb2d0c 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/ForecastJobResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/ForecastJobResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.ConstructingObjectParser;
 import org.elasticsearch.common.xcontent.ToXContentObject;
@@ -31,7 +30,7 @@ import java.util.Objects;
 /**
  * Forecast response object
  */
-public class ForecastJobResponse extends ActionResponse implements ToXContentObject {
+public class ForecastJobResponse implements ToXContentObject {
 
     public static final ParseField ACKNOWLEDGED = new ParseField("acknowledged");
     public static final ParseField FORECAST_ID = new ParseField("forecast_id");
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/OpenJobResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/OpenJobResponse.java
index 2536aeeaf78..61ce6b1544e 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/OpenJobResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/OpenJobResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.ConstructingObjectParser;
 import org.elasticsearch.common.xcontent.ToXContentObject;
@@ -31,7 +30,7 @@ import java.util.Objects;
 /**
  * Response indicating if the Machine Learning Job is now opened or not
  */
-public class OpenJobResponse extends ActionResponse implements ToXContentObject {
+public class OpenJobResponse implements ToXContentObject {
 
     private static final ParseField OPENED = new ParseField("opened");
 
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/PostCalendarEventResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/PostCalendarEventResponse.java
index 56e3cdce24f..95d6a3bc711 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/PostCalendarEventResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/PostCalendarEventResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.client.ml.calendars.ScheduledEvent;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.ConstructingObjectParser;
@@ -33,7 +32,7 @@ import java.util.Objects;
 /**
  * Response to adding ScheduledEvent(s) to a Machine Learning calendar
  */
-public class PostCalendarEventResponse extends ActionResponse implements ToXContentObject {
+public class PostCalendarEventResponse implements ToXContentObject {
 
     private final List<ScheduledEvent> scheduledEvents;
     public static final ParseField EVENTS = new ParseField("events");
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/PostDataResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/PostDataResponse.java
index ce99316e90c..c93035570b2 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/PostDataResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/PostDataResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.client.ml.job.process.DataCounts;
 import org.elasticsearch.common.xcontent.ToXContent;
 import org.elasticsearch.common.xcontent.ToXContentObject;
@@ -31,7 +30,7 @@ import java.util.Objects;
 /**
  * Response object when posting data to a Machine Learning Job
  */
-public class PostDataResponse extends ActionResponse implements ToXContentObject {
+public class PostDataResponse implements ToXContentObject {
 
     private DataCounts dataCounts;
 
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/PreviewDatafeedResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/PreviewDatafeedResponse.java
index ca96f153c60..5a16040cb5e 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/PreviewDatafeedResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/PreviewDatafeedResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.common.Strings;
 import org.elasticsearch.common.bytes.BytesReference;
 import org.elasticsearch.common.io.stream.StreamInput;
@@ -41,7 +40,7 @@ import java.util.stream.Collectors;
 /**
  * Response containing a datafeed preview in JSON format
  */
-public class PreviewDatafeedResponse extends ActionResponse implements ToXContentObject {
+public class PreviewDatafeedResponse implements ToXContentObject {
 
     private BytesReference preview;
 
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/RevertModelSnapshotResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/RevertModelSnapshotResponse.java
index 575f38043b3..93699b0531f 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/RevertModelSnapshotResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/RevertModelSnapshotResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.client.ml.job.process.ModelSnapshot;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.ConstructingObjectParser;
@@ -27,13 +26,12 @@ import org.elasticsearch.common.xcontent.XContentBuilder;
 import org.elasticsearch.common.xcontent.XContentParser;
 
 import java.io.IOException;
-
 import java.util.Objects;
 
 /**
  * A response containing the reverted model snapshot
  */
-public class RevertModelSnapshotResponse extends ActionResponse implements ToXContentObject {
+public class RevertModelSnapshotResponse implements ToXContentObject {
 
     private static final ParseField MODEL = new ParseField("model");
 
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/StartDatafeedResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/StartDatafeedResponse.java
index d4ed46c5316..aec83636115 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/StartDatafeedResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/StartDatafeedResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.ConstructingObjectParser;
 import org.elasticsearch.common.xcontent.ToXContentObject;
@@ -31,7 +30,7 @@ import java.util.Objects;
 /**
  * Response indicating if the Machine Learning Datafeed is now started or not
  */
-public class StartDatafeedResponse extends ActionResponse implements ToXContentObject {
+public class StartDatafeedResponse implements ToXContentObject {
 
     private static final ParseField STARTED = new ParseField("started");
 
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/StopDatafeedResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/StopDatafeedResponse.java
index c370d7d9d0b..6f649bd3589 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/StopDatafeedResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/StopDatafeedResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.ConstructingObjectParser;
 import org.elasticsearch.common.xcontent.ToXContentObject;
@@ -31,7 +30,7 @@ import java.util.Objects;
 /**
  * Response indicating if the Machine Learning Datafeed is now stopped or not
  */
-public class StopDatafeedResponse extends ActionResponse implements ToXContentObject {
+public class StopDatafeedResponse implements ToXContentObject {
 
     private static final ParseField STOPPED = new ParseField("stopped");
 
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/UpdateModelSnapshotResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/UpdateModelSnapshotResponse.java
index 049a24c02d1..9f545f4aba4 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/UpdateModelSnapshotResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/ml/UpdateModelSnapshotResponse.java
@@ -18,7 +18,6 @@
  */
 package org.elasticsearch.client.ml;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.client.ml.job.process.ModelSnapshot;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.ConstructingObjectParser;
@@ -33,7 +32,7 @@ import java.util.Objects;
 /**
  * A response acknowledging the update of information for an existing model snapshot for a given job
  */
-public class UpdateModelSnapshotResponse extends ActionResponse implements ToXContentObject {
+public class UpdateModelSnapshotResponse implements ToXContentObject {
 
     private static final ParseField ACKNOWLEDGED = new ParseField("acknowledged");
     private static final ParseField MODEL = new ParseField("model");
diff --git a/client/rest-high-level/src/main/java/org/elasticsearch/client/tasks/TaskSubmissionResponse.java b/client/rest-high-level/src/main/java/org/elasticsearch/client/tasks/TaskSubmissionResponse.java
index 7bc104c9bbf..011be514d13 100644
--- a/client/rest-high-level/src/main/java/org/elasticsearch/client/tasks/TaskSubmissionResponse.java
+++ b/client/rest-high-level/src/main/java/org/elasticsearch/client/tasks/TaskSubmissionResponse.java
@@ -19,7 +19,6 @@
 
 package org.elasticsearch.client.tasks;
 
-import org.elasticsearch.action.ActionResponse;
 import org.elasticsearch.common.ParseField;
 import org.elasticsearch.common.xcontent.ConstructingObjectParser;
 import org.elasticsearch.common.xcontent.XContentParser;
@@ -27,7 +26,7 @@ import org.elasticsearch.common.xcontent.XContentParser;
 import java.io.IOException;
 import java.util.Objects;
 
-public class TaskSubmissionResponse extends ActionResponse {
+public class TaskSubmissionResponse {
 
     private static final ParseField TASK = new ParseField("task");