public Builder addCdnKeys(int index, com.google.cloud.video.stitcher.v1.CdnKey value) {
      if (cdnKeysBuilder_ == null) {
        if (value == null) {
          throw new NullPointerException();
        }
        ensureCdnKeysIsMutable();
        cdnKeys_.add(index, value);
        onChanged();
      } else {
        cdnKeysBuilder_.addMessage(index, value);
      }
      return this;
    }
<pre>
List of CDN keys.
</pre>

<code>repeated .google.cloud.video.stitcher.v1.CdnKey cdn_keys = 1;</code>
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/ListCdnKeysResponse.java