@java.lang.Override
  public com.google.cloud.video.livestream.v1.RetentionConfigOrBuilder
      getRetentionConfigOrBuilder() {
    return retentionConfig_ == null
        ? com.google.cloud.video.livestream.v1.RetentionConfig.getDefaultInstance()
        : retentionConfig_;
  }
<pre>
Optional. Configuration for retention of output files for this channel.
</pre>

<code>
.google.cloud.video.livestream.v1.RetentionConfig retention_config = 26 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/Channel.java