public Builder mergeCompanionAds(com.google.cloud.video.stitcher.v1.CompanionAds value) {
      if (companionAdsBuilder_ == null) {
        if (((bitField0_ & 0x00000002) != 0)
            && companionAds_ != null
            && companionAds_
                != com.google.cloud.video.stitcher.v1.CompanionAds.getDefaultInstance()) {
          getCompanionAdsBuilder().mergeFrom(value);
        } else {
          companionAds_ = value;
        }
      } else {
        companionAdsBuilder_.mergeFrom(value);
      }
      if (companionAds_ != null) {
        bitField0_ |= 0x00000002;
        onChanged();
      }
      return this;
    }
<pre>
Metadata of companion ads associated with the ad.
</pre>

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