private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.speech.v2.StreamingRecognitionFeatures,
            com.google.cloud.speech.v2.StreamingRecognitionFeatures.Builder,
            com.google.cloud.speech.v2.StreamingRecognitionFeaturesOrBuilder>
        getStreamingFeaturesFieldBuilder() {
      if (streamingFeaturesBuilder_ == null) {
        streamingFeaturesBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.speech.v2.StreamingRecognitionFeatures,
                com.google.cloud.speech.v2.StreamingRecognitionFeatures.Builder,
                com.google.cloud.speech.v2.StreamingRecognitionFeaturesOrBuilder>(
                getStreamingFeatures(), getParentForChildren(), isClean());
        streamingFeatures_ = null;
      }
      return streamingFeaturesBuilder_;
    }
<pre>
Speech recognition features to enable specific to streaming audio
recognition requests.
</pre>

<code>.google.cloud.speech.v2.StreamingRecognitionFeatures streaming_features = 2;</code>
java-speech/proto-google-cloud-speech-v2/src/main/java/com/google/cloud/speech/v2/StreamingRecognitionConfig.java