private com.google.protobuf.SingleFieldBuilderV3<
            com.google.cloud.videointelligence.v1p3beta1.NormalizedBoundingPoly,
            com.google.cloud.videointelligence.v1p3beta1.NormalizedBoundingPoly.Builder,
            com.google.cloud.videointelligence.v1p3beta1.NormalizedBoundingPolyOrBuilder>
        getRotatedBoundingBoxFieldBuilder() {
      if (rotatedBoundingBoxBuilder_ == null) {
        rotatedBoundingBoxBuilder_ =
            new com.google.protobuf.SingleFieldBuilderV3<
                com.google.cloud.videointelligence.v1p3beta1.NormalizedBoundingPoly,
                com.google.cloud.videointelligence.v1p3beta1.NormalizedBoundingPoly.Builder,
                com.google.cloud.videointelligence.v1p3beta1.NormalizedBoundingPolyOrBuilder>(
                getRotatedBoundingBox(), getParentForChildren(), isClean());
        rotatedBoundingBox_ = null;
      }
      return rotatedBoundingBoxBuilder_;
    }
<pre>
Bounding polygon of the detected text for this frame.
</pre>

<code>
.google.cloud.videointelligence.v1p3beta1.NormalizedBoundingPoly rotated_bounding_box = 1;
</code>
java-video-intelligence/proto-google-cloud-video-intelligence-v1p3beta1/src/main/java/com/google/cloud/videointelligence/v1p3beta1/TextFrame.java