public com.google.rpc.StatusOrBuilder getErrorOrBuilder() {
      if (errorBuilder_ != null) {
        return errorBuilder_.getMessageOrBuilder();
      } else {
        return error_ == null ? com.google.rpc.Status.getDefaultInstance() : error_;
      }
    }
<pre>
Only populated when operation doesn't succeed.
</pre>

<code>.google.rpc.Status error = 4;</code>
java-translate/proto-google-cloud-translate-v3/src/main/java/com/google/cloud/translate/v3/CreateModelMetadata.java