public Builder mergeFaceRecognitionParams(
        com.google.cloud.vision.v1p4beta1.FaceRecognitionParams value) {
      if (faceRecognitionParamsBuilder_ == null) {
        if (((bitField0_ & 0x00000008) != 0)
            && faceRecognitionParams_ != null
            && faceRecognitionParams_
                != com.google.cloud.vision.v1p4beta1.FaceRecognitionParams.getDefaultInstance()) {
          getFaceRecognitionParamsBuilder().mergeFrom(value);
        } else {
          faceRecognitionParams_ = value;
        }
      } else {
        faceRecognitionParamsBuilder_.mergeFrom(value);
      }
      if (faceRecognitionParams_ != null) {
        bitField0_ |= 0x00000008;
        onChanged();
      }
      return this;
    }
<pre>
Parameters for face recognition.
</pre>

<code>.google.cloud.vision.v1p4beta1.FaceRecognitionParams face_recognition_params = 10;
</code>
java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/ImageContext.java