public Builder setTextStream(
        com.google.cloud.video.livestream.v1.TextStream.Builder builderForValue) {
      if (textStreamBuilder_ == null) {
        elementaryStream_ = builderForValue.build();
        onChanged();
      } else {
        textStreamBuilder_.setMessage(builderForValue.build());
      }
      elementaryStreamCase_ = 3;
      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