private void buildPartialOneofs(com.google.cloud.video.transcoder.v1.ElementaryStream result) {
      result.elementaryStreamCase_ = elementaryStreamCase_;
      result.elementaryStream_ = this.elementaryStream_;
      if (elementaryStreamCase_ == 1 && videoStreamBuilder_ != null) {
        result.elementaryStream_ = videoStreamBuilder_.build();
      }
      if (elementaryStreamCase_ == 2 && audioStreamBuilder_ != null) {
        result.elementaryStream_ = audioStreamBuilder_.build();
      }
      if (elementaryStreamCase_ == 3 && textStreamBuilder_ != null) {
        result.elementaryStream_ = textStreamBuilder_.build();
      }
    }
<pre>
Encoding of an input file such as an audio, video, or text track.
Elementary streams must be packaged before
mapping and sharing between different output formats.
</pre>

Protobuf type {@code google.cloud.video.transcoder.v1.ElementaryStream}
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/ElementaryStream.java