private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.speech.v2.UpdateRecognizerRequest,
            com.google.cloud.speech.v2.UpdateRecognizerRequest.Builder,
            com.google.cloud.speech.v2.UpdateRecognizerRequestOrBuilder>
        getUpdateRecognizerRequestFieldBuilder() {
      if (updateRecognizerRequestBuilder_ == null) {
        if (!(requestCase_ == 10)) {
          request_ = com.google.cloud.speech.v2.UpdateRecognizerRequest.getDefaultInstance();
        }
        updateRecognizerRequestBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.speech.v2.UpdateRecognizerRequest,
                com.google.cloud.speech.v2.UpdateRecognizerRequest.Builder,
                com.google.cloud.speech.v2.UpdateRecognizerRequestOrBuilder>(
                (com.google.cloud.speech.v2.UpdateRecognizerRequest) request_,
                getParentForChildren(),
                isClean());
        request_ = null;
      }
      requestCase_ = 10;
      onChanged();
      return updateRecognizerRequestBuilder_;
    }
<pre>
The UpdateRecognizerRequest that spawned the Operation.
</pre>

<code>.google.cloud.speech.v2.UpdateRecognizerRequest update_recognizer_request = 10;</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/OperationMetadata.java