private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.speech.v2.BatchRecognizeRequest,
            com.google.cloud.speech.v2.BatchRecognizeRequest.Builder,
            com.google.cloud.speech.v2.BatchRecognizeRequestOrBuilder>
        getBatchRecognizeRequestFieldBuilder() {
      if (batchRecognizeRequestBuilder_ == null) {
        if (!(requestCase_ == 8)) {
          request_ = com.google.cloud.speech.v2.BatchRecognizeRequest.getDefaultInstance();
        }
        batchRecognizeRequestBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.speech.v2.BatchRecognizeRequest,
                com.google.cloud.speech.v2.BatchRecognizeRequest.Builder,
                com.google.cloud.speech.v2.BatchRecognizeRequestOrBuilder>(
                (com.google.cloud.speech.v2.BatchRecognizeRequest) request_,
                getParentForChildren(),
                isClean());
        request_ = null;
      }
      requestCase_ = 8;
      onChanged();
      return batchRecognizeRequestBuilder_;
    }
<pre>
The BatchRecognizeRequest that spawned the Operation.
</pre>

<code>.google.cloud.speech.v2.BatchRecognizeRequest batch_recognize_request = 8;</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/OperationMetadata.java