@java.lang.Override
    public com.google.protobuf.ByteString getPrivateKey() {
      return privateKey_;
    }
<pre>
Input only. 64-byte ed25519 private key for this Media CDN key.
</pre>

<code>bytes private_key = 1 [(.google.api.field_behavior) = INPUT_ONLY];</code>

@return The privateKey.
java-video-stitcher/proto-google-cloud-video-stitcher-v1/src/main/java/com/google/cloud/video/stitcher/v1/MediaCdnKey.java