private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.video.livestream.v1.Input,
            com.google.cloud.video.livestream.v1.Input.Builder,
            com.google.cloud.video.livestream.v1.InputOrBuilder>
        getInputFieldBuilder() {
      if (inputBuilder_ == null) {
        inputBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.video.livestream.v1.Input,
                com.google.cloud.video.livestream.v1.Input.Builder,
                com.google.cloud.video.livestream.v1.InputOrBuilder>(
                getInput(), getParentForChildren(), isClean());
        input_ = null;
      }
      return inputBuilder_;
    }
<pre>
Required. The input resource to be created.
</pre>

<code>
.google.cloud.video.livestream.v1.Input input = 2 [(.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/CreateInputRequest.java