public Builder clearTextStream() {
      if (textStreamBuilder_ == null) {
        if (elementaryStreamCase_ == 3) {
          elementaryStreamCase_ = 0;
          elementaryStream_ = null;
          onChanged();
        }
      } else {
        if (elementaryStreamCase_ == 3) {
          elementaryStreamCase_ = 0;
          elementaryStream_ = null;
        }
        textStreamBuilder_.clear();
      }
      return this;
    }
<pre>
Encoding of a text stream. For example, closed captions or subtitles.
</pre>

<code>.google.cloud.video.transcoder.v1.TextStream text_stream = 3;</code>
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/ElementaryStream.java