public Builder clearFeatures() {
      if (featuresBuilder_ == null) {
        features_ = java.util.Collections.emptyList();
        bitField0_ = (bitField0_ & ~0x00000002);
        onChanged();
      } else {
        featuresBuilder_.clear();
      }
      return this;
    }
<pre>
Required. Requested features.
</pre>

<code>repeated .google.cloud.vision.v1p4beta1.Feature features = 2;</code>
java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/AnnotateFileRequest.java