private com.google.protobuf.RepeatedFieldBuilderV3<
            com.google.cloud.vision.v1p2beta1.Feature,
            com.google.cloud.vision.v1p2beta1.Feature.Builder,
            com.google.cloud.vision.v1p2beta1.FeatureOrBuilder>
        getFeaturesFieldBuilder() {
      if (featuresBuilder_ == null) {
        featuresBuilder_ =
            new com.google.protobuf.RepeatedFieldBuilderV3<
                com.google.cloud.vision.v1p2beta1.Feature,
                com.google.cloud.vision.v1p2beta1.Feature.Builder,
                com.google.cloud.vision.v1p2beta1.FeatureOrBuilder>(
                features_, ((bitField0_ & 0x00000002) != 0), getParentForChildren(), isClean());
        features_ = null;
      }
      return featuresBuilder_;
    }
<pre>
Required. Requested features.
</pre>

<code>repeated .google.cloud.vision.v1p2beta1.Feature features = 2;</code>
java-vision/proto-google-cloud-vision-v1p2beta1/src/main/java/com/google/cloud/vision/v1p2beta1/AsyncAnnotateFileRequest.java