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