public Builder addCompanions(int index, com.google.cloud.video.stitcher.v1.Companion value) {
      if (companionsBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        ensureCompanionsIsMutable();
        companions_.add(index, value);
        onChanged();
      } else {
        companionsBuilder_.addMessage(index, value);
      }
      return this;
    }
<pre>
List of companion ads.
</pre>

<code>repeated .google.cloud.video.stitcher.v1.Companion companions = 2;</code>
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/CompanionAds.java