private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vision.v1p4beta1.BoundingPoly,
            com.google.cloud.vision.v1p4beta1.BoundingPoly.Builder,
            com.google.cloud.vision.v1p4beta1.BoundingPolyOrBuilder>
        getBoundingPolyFieldBuilder() {
      if (boundingPolyBuilder_ == null) {
        boundingPolyBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vision.v1p4beta1.BoundingPoly,
                com.google.cloud.vision.v1p4beta1.BoundingPoly.Builder,
                com.google.cloud.vision.v1p4beta1.BoundingPolyOrBuilder>(
                getBoundingPoly(), getParentForChildren(), isClean());
        boundingPoly_ = null;
      }
      return boundingPolyBuilder_;
    }
<pre>
Image region to which this entity belongs. Not produced
for `LABEL_DETECTION` features.
</pre>

<code>.google.cloud.vision.v1p4beta1.BoundingPoly bounding_poly = 7;</code>
java-vision/proto-google-cloud-vision-v1p4beta1/src/main/java/com/google/cloud/vision/v1p4beta1/EntityAnnotation.java