private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.video.livestream.v1.InputConfig,
            com.google.cloud.video.livestream.v1.InputConfig.Builder,
            com.google.cloud.video.livestream.v1.InputConfigOrBuilder>
        getInputConfigFieldBuilder() {
      if (inputConfigBuilder_ == null) {
        inputConfigBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.video.livestream.v1.InputConfig,
                com.google.cloud.video.livestream.v1.InputConfig.Builder,
                com.google.cloud.video.livestream.v1.InputConfigOrBuilder>(
                getInputConfig(), getParentForChildren(), isClean());
        inputConfig_ = null;
      }
      return inputConfigBuilder_;
    }
<pre>
The configuration for input sources defined in
[input_attachments][google.cloud.video.livestream.v1.Channel.input_attachments].
</pre>

<code>.google.cloud.video.livestream.v1.InputConfig input_config = 25;</code>
java-video-live-stream/proto-google-cloud-live-stream-v1/src/main/java/com/google/cloud/video/livestream/v1/Channel.java