public static com.google.cloud.speech.v1p1beta1.RecognizeResponse getDefaultInstance() {
    return DEFAULT_INSTANCE;
  }
<pre>
Whether request used legacy asr models (was not automatically migrated to
use conformer models).
</pre>

<code>bool using_legacy_models = 9;</code>

@return This builder for chaining.
java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/RecognizeResponse.java