public com.google.rpc.Status getError() {
      if (errorBuilder_ == null) {
        return error_ == null ? com.google.rpc.Status.getDefaultInstance() : error_;
      } else {
        return errorBuilder_.getMessage();
      }
    }
<pre>
If set, represents the error message for the failed request. The
`responses` field will not be set in this case.
</pre>

<code>.google.rpc.Status error = 4;</code>

@return The error.
java-vision/proto-google-cloud-vision-v1/src/main/java/com/google/cloud/vision/v1/AnnotateFileResponse.java