private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.video.transcoder.v1.MuxStream,
            com.google.cloud.video.transcoder.v1.MuxStream.Builder,
            com.google.cloud.video.transcoder.v1.MuxStreamOrBuilder>
        getMuxStreamsFieldBuilder() {
      if (muxStreamsBuilder_ == null) {
        muxStreamsBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.video.transcoder.v1.MuxStream,
                com.google.cloud.video.transcoder.v1.MuxStream.Builder,
                com.google.cloud.video.transcoder.v1.MuxStreamOrBuilder>(
                muxStreams_, ((bitField0_ & 0x00000008) != 0), getParentForChildren(), isClean());
        muxStreams_ = null;
      }
      return muxStreamsBuilder_;
    }
<pre>
List of multiplexing settings for output streams.
</pre>

<code>repeated .google.cloud.video.transcoder.v1.MuxStream mux_streams = 4;</code>
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/JobConfig.java