public com.google.protobuf.ByteString getUidBytes() {
      java.lang.Object ref = uid_;
      if (ref instanceof String) {
        com.google.protobuf.ByteString b =
            com.google.protobuf.ByteString.copyFromUtf8((java.lang.String) ref);
        uid_ = b;
        return b;
      } else {
        return (com.google.protobuf.ByteString) ref;
      }
    }
<pre>
Output only. System-generated unique identifier for the resource.
</pre>

<code>string uid = 9 [(.google.api.field_behavior) = OUTPUT_ONLY];</code>

@return The bytes for uid.
java-vmwareengine/proto-google-cloud-vmwareengine-v1/src/main/java/com/google/cloud/vmwareengine/v1/ExternalAddress.java