private void ensureAnimationsIsMutable() {
      if (!((bitField0_ & 0x00000002) != 0)) {
        animations_ =
            new java.util.ArrayList<com.google.cloud.video.transcoder.v1.Overlay.Animation>(
                animations_);
        bitField0_ |= 0x00000002;
      }
    }
<pre>
Image overlay.
</pre>

<code>.google.cloud.video.transcoder.v1.Overlay.Image image = 1;</code>
java-video-transcoder/proto-google-cloud-video-transcoder-v1/src/main/java/com/google/cloud/video/transcoder/v1/Overlay.java