code: protected void renderDebugBoundingBoxOuter(Graphics2D context) {
  		java.awt.Color previousColor = context.getColor();
  		context.setColor(java.awt.Color.RED);
  		Rectangle2D bb = getBoundingBox();
  		bb.setRect(bb.getX()-1, bb.getY()-1, bb.getWidth()+2, bb.getHeight()+2);
  		context.draw(bb);
  		context.setColor(previousColor);
  	}
docs: For debugging purpose, draw the outer of bounding box of
  the element