@java.lang.Override
  public boolean hasHtmlAdResource() {
    return adResourceCase_ == 12;
  }
<pre>
The HTML ad resource associated with the companion ad.
</pre>

<code>.google.cloud.video.stitcher.v1.HtmlAdResource html_ad_resource = 12;</code>

@return Whether the htmlAdResource field is set.
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/Companion.java