public com.google.cloud.video.stitcher.v1.Slate.Builder addSlatesBuilder(int index) {
      return getSlatesFieldBuilder()
          .addBuilder(index, com.google.cloud.video.stitcher.v1.Slate.getDefaultInstance());
    }
<pre>
The list of slates
</pre>

<code>repeated .google.cloud.video.stitcher.v1.Slate slates = 1;</code>
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/ListSlatesResponse.java