code: private static Rectangle2d union(AbstractGISTreeSetNode<?, ?> node, Rectangle2afp<?, ?, ?, ?, ?, ?> shape) {
  		final Rectangle2d b = getNodeBuildingBounds(node);
  		b.setUnion(shape);
  		normalize(b, shape);
  		return b;
  	}
docs: Compute the union of the building bounds of the given node and the given geolocation.