private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.videointelligence.v1p3beta1.StreamingVideoConfig,
            com.google.cloud.videointelligence.v1p3beta1.StreamingVideoConfig.Builder,
            com.google.cloud.videointelligence.v1p3beta1.StreamingVideoConfigOrBuilder>
        getVideoConfigFieldBuilder() {
      if (videoConfigBuilder_ == null) {
        if (!(streamingRequestCase_ == 1)) {
          streamingRequest_ =
              com.google.cloud.videointelligence.v1p3beta1.StreamingVideoConfig
                  .getDefaultInstance();
        }
        videoConfigBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.videointelligence.v1p3beta1.StreamingVideoConfig,
                com.google.cloud.videointelligence.v1p3beta1.StreamingVideoConfig.Builder,
                com.google.cloud.videointelligence.v1p3beta1.StreamingVideoConfigOrBuilder>(
                (com.google.cloud.videointelligence.v1p3beta1.StreamingVideoConfig)
                    streamingRequest_,
                getParentForChildren(),
                isClean());
        streamingRequest_ = null;
      }
      streamingRequestCase_ = 1;
      onChanged();
      return videoConfigBuilder_;
    }
<pre>
Provides information to the annotator, specifing how to process the
request. The first `AnnotateStreamingVideoRequest` message must only
contain a `video_config` message.
</pre>

<code>.google.cloud.videointelligence.v1p3beta1.StreamingVideoConfig video_config = 1;</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1p3beta1/src/main/java/com/google/cloud/videointelligence/v1p3beta1/StreamingAnnotateVideoRequest.java