public Builder mergeTokenConfig(
        com.google.cloud.video.stitcher.v1.MediaCdnKey.TokenConfig value) {
      if (tokenConfigBuilder_ == null) {
        if (((bitField0_ & 0x00000004) != 0)
            && tokenConfig_ != null
            && tokenConfig_
                != com.google.cloud.video.stitcher.v1.MediaCdnKey.TokenConfig
                    .getDefaultInstance()) {
          getTokenConfigBuilder().mergeFrom(value);
        } else {
          tokenConfig_ = value;
        }
      } else {
        tokenConfigBuilder_.mergeFrom(value);
      }
      if (tokenConfig_ != null) {
        bitField0_ |= 0x00000004;
        onChanged();
      }
      return this;
    }
<pre>
Optional. If set, the URL will be signed using the Media CDN token.
Otherwise, the URL would be signed using the standard Media CDN signature.
</pre>

<code>
.google.cloud.video.stitcher.v1.MediaCdnKey.TokenConfig token_config = 3 [(.google.api.field_behavior) = OPTIONAL];
</code>
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/MediaCdnKey.java