private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.video.livestream.v1.Channel.Output,
            com.google.cloud.video.livestream.v1.Channel.Output.Builder,
            com.google.cloud.video.livestream.v1.Channel.OutputOrBuilder>
        getOutputFieldBuilder() {
      if (outputBuilder_ == null) {
        outputBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.video.livestream.v1.Channel.Output,
                com.google.cloud.video.livestream.v1.Channel.Output.Builder,
                com.google.cloud.video.livestream.v1.Channel.OutputOrBuilder>(
                getOutput(), getParentForChildren(), isClean());
        output_ = null;
      }
      return outputBuilder_;
    }
<pre>
Required. Information about the output (that is, the Cloud Storage bucket
to store the generated live stream).
</pre>

<code>
.google.cloud.video.livestream.v1.Channel.Output output = 9 [(.google.api.field_behavior) = REQUIRED];
</code>
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/Channel.java