private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.video.stitcher.v1.Companion,
            com.google.cloud.video.stitcher.v1.Companion.Builder,
            com.google.cloud.video.stitcher.v1.CompanionOrBuilder>
        getCompanionsFieldBuilder() {
      if (companionsBuilder_ == null) {
        companionsBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.video.stitcher.v1.Companion,
                com.google.cloud.video.stitcher.v1.Companion.Builder,
                com.google.cloud.video.stitcher.v1.CompanionOrBuilder>(
                companions_, ((bitField0_ & 0x00000002) != 0), getParentForChildren(), isClean());
        companions_ = null;
      }
      return companionsBuilder_;
    }
<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