public Builder mergeRetentionConfig(
        com.google.cloud.video.livestream.v1.RetentionConfig value) {
      if (retentionConfigBuilder_ == null) {
        if (((bitField0_ & 0x00020000) != 0)
            && retentionConfig_ != null
            && retentionConfig_
                != com.google.cloud.video.livestream.v1.RetentionConfig.getDefaultInstance()) {
          getRetentionConfigBuilder().mergeFrom(value);
        } else {
          retentionConfig_ = value;
        }
      } else {
        retentionConfigBuilder_.mergeFrom(value);
      }
      if (retentionConfig_ != null) {
        bitField0_ |= 0x00020000;
        onChanged();
      }
      return this;
    }
<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