private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.video.stitcher.v1.AkamaiCdnKey,
            com.google.cloud.video.stitcher.v1.AkamaiCdnKey.Builder,
            com.google.cloud.video.stitcher.v1.AkamaiCdnKeyOrBuilder>
        getAkamaiCdnKeyFieldBuilder() {
      if (akamaiCdnKeyBuilder_ == null) {
        if (!(cdnKeyConfigCase_ == 6)) {
          cdnKeyConfig_ = com.google.cloud.video.stitcher.v1.AkamaiCdnKey.getDefaultInstance();
        }
        akamaiCdnKeyBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.video.stitcher.v1.AkamaiCdnKey,
                com.google.cloud.video.stitcher.v1.AkamaiCdnKey.Builder,
                com.google.cloud.video.stitcher.v1.AkamaiCdnKeyOrBuilder>(
                (com.google.cloud.video.stitcher.v1.AkamaiCdnKey) cdnKeyConfig_,
                getParentForChildren(),
                isClean());
        cdnKeyConfig_ = null;
      }
      cdnKeyConfigCase_ = 6;
      onChanged();
      return akamaiCdnKeyBuilder_;
    }
<pre>
The configuration for an Akamai CDN key.
</pre>

<code>.google.cloud.video.stitcher.v1.AkamaiCdnKey akamai_cdn_key = 6;</code>
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/CdnKey.java