private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.vision.v1p1beta1.BoundingPoly,
            com.google.cloud.vision.v1p1beta1.BoundingPoly.Builder,
            com.google.cloud.vision.v1p1beta1.BoundingPolyOrBuilder>
        getBoundingBoxFieldBuilder() {
      if (boundingBoxBuilder_ == null) {
        boundingBoxBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.vision.v1p1beta1.BoundingPoly,
                com.google.cloud.vision.v1p1beta1.BoundingPoly.Builder,
                com.google.cloud.vision.v1p1beta1.BoundingPolyOrBuilder>(
                getBoundingBox(), getParentForChildren(), isClean());
        boundingBox_ = null;
      }
      return boundingBoxBuilder_;
    }
<pre>
The bounding box for the paragraph.
The vertices are in the order of top-left, top-right, bottom-right,
bottom-left. When a rotation of the bounding box is detected the rotation
is represented as around the top-left corner as defined when the text is
read in the 'natural' orientation.
For example:
  * when the text is horizontal it might look like:
     0----1
     |    |
     3----2
  * when it's rotated 180 degrees around the top-left corner it becomes:
     2----3
     |    |
     1----0
  and the vertice order will still be (0, 1, 2, 3).
</pre>

<code>.google.cloud.vision.v1p1beta1.BoundingPoly bounding_box = 2;</code>
java-vision/proto-google-cloud-vision-v1p1beta1/src/main/java/com/google/cloud/vision/v1p1beta1/Paragraph.java