public Builder mergeConfig(com.google.cloud.speech.v1p1beta1.RecognitionConfig value) {
      if (configBuilder_ == null) {
        if (((bitField0_ & 0x00000001) != 0)
            && config_ != null
            && config_
                != com.google.cloud.speech.v1p1beta1.RecognitionConfig.getDefaultInstance()) {
          getConfigBuilder().mergeFrom(value);
        } else {
          config_ = value;
        }
      } else {
        configBuilder_.mergeFrom(value);
      }
      if (config_ != null) {
        bitField0_ |= 0x00000001;
        onChanged();
      }
      return this;
    }
<pre>
Required. Provides information to the recognizer that specifies how to
process the request.
</pre>

<code>
.google.cloud.speech.v1p1beta1.RecognitionConfig config = 1 [(.google.api.field_behavior) = REQUIRED];
</code>
java-speech/proto-google-cloud-speech-v1p1beta1/src/main/java/com/google/cloud/speech/v1p1beta1/RecognizeRequest.java