public Builder setMapping(
        int index, com.google.cloud.video.livestream.v1.AudioStream.AudioMapping value) {
      if (mappingBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        ensureMappingIsMutable();
        mapping_.set(index, value);
        onChanged();
      } else {
        mappingBuilder_.setMessage(index, value);
      }
      return this;
    }
<pre>
The mapping for the input streams and audio channels.
</pre>

<code>repeated .google.cloud.video.livestream.v1.AudioStream.AudioMapping mapping = 5;</code>
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/AudioStream.java