- [Other notable changes](#other-notable-changes)
- [v1.15.7](#v1157)
  - [Downloads for v1.15.7](#downloads-for-v1157)
    - [Client Binaries](#client-binaries-5)
    - [Server Binaries](#server-binaries-5)
    - [Node Binaries](#node-binaries-5)
  - [Changelog since v1.15.6](#changelog-since-v1156)
    - [Other notable changes](#other-notable-changes-1)
- [v1.15.6](#v1156)

        }
      ]
    },
    "breaking_change": {
      "requires": 1,
      "conditions": [
        {
          "type": "descriptionMatches",
          "pattern": "/\\[\\] Non breaking API changes/"
        }
      ]
    }
  }

    - [Other notable changes](#other-notable-changes)
- [v1.12.9](#v1129)
  - [Downloads for v1.12.9](#downloads-for-v1129)
    - [Client Binaries](#client-binaries-1)
    - [Server Binaries](#server-binaries-1)
    - [Node Binaries](#node-binaries-1)
  - [Changelog since v1.12.8](#changelog-since-v1128)
    - [Other notable changes](#other-notable-changes-1)
- [v1.12.8](#v1128)

    - [Source Code](#source-code)
    - [Client Binaries](#client-binaries)
    - [Server Binaries](#server-binaries)
    - [Node Binaries](#node-binaries)
  - [Changelog since v1.19.15](#changelog-since-v11915)
  - [Changes by Kind](#changes-by-kind)
    - [Bug or Regression](#bug-or-regression)
  - [Dependencies](#dependencies)
    - [Added](#added)
    - [Changed](#changed)
    - [Removed](#removed)
- [v1.19.15](#v11915)

    - [Action Required](#action-required)
    - [Other notable changes](#other-notable-changes)
- [v1.9.10](#v1910)
  - [Downloads for v1.9.10](#downloads-for-v1910)
    - [Client Binaries](#client-binaries-1)
    - [Server Binaries](#server-binaries-1)
    - [Node Binaries](#node-binaries-1)
  - [Changelog since v1.9.9](#changelog-since-v199)
    - [Other notable changes](#other-notable-changes-1)
- [v1.9.9](#v199)

    - [Server Binaries](#server-binaries-1)
    - [Node Binaries](#node-binaries-1)
    - [Container Images](#container-images-1)
  - [Changelog since v1.21.12](#changelog-since-v12112)
  - [Changes by Kind](#changes-by-kind)
    - [Bug or Regression](#bug-or-regression)
  - [Dependencies](#dependencies-1)
    - [Added](#added-1)
    - [Changed](#changed-1)
    - [Removed](#removed-1)
- [v1.21.12](#v12112)

_2015-05-22_

 *  **Forbid response bodies on HTTP 204 and 205 responses.** Webservers that
    return such malformed responses will now trigger a `ProtocolException` in
    the client.

 *  **WebSocketListener has incompatible changes.** The `onOpen()` method is now
    called on the reader thread, so implementations must return before further
    websocket messages will be delivered. The `onFailure()` method now includes

Kotlin’s powerful deprecation features. Most developers should be able to use IntelliJ’s _Code
Cleanup_ for a safe and fast upgrade.


Backwards-Incompatible Changes
------------------------------

#### OkHttpClient final methods

`OkHttpClient` has 26 accessors like `interceptors()` and `writeTimeoutMillis()` that were non-final

   * of common.collect a second time with the results of the first compilation on the classpath. Or
   * just back this out once we stop doing that (which we'll do after our internal GWT setup
   * changes).
   */
  @Override
  public ImmutableMap<Object, Collection<Object>> asMap() {
    return super.asMap();
  }

  private Object readResolve() {
    return INSTANCE; // preserve singleton property
  }

@SuppressWarnings("rawtypes") // maybe avoidable if we rework the whole package?
@GwtCompatible
public enum MultisetFeature implements Feature<Multiset> {
  /**
   * Indicates that elements from {@code Multiset.entrySet()} update to reflect changes in the
   * backing multiset.
   */
  ENTRIES_ARE_VIEWS;

  @Override
  public Set<Feature<? super Multiset>> getImpliedFeatures() {
    return emptySet();
  }

  @Retention(RetentionPolicy.RUNTIME)