code: public Shape createArrowLeft(final double x, final double y, final double w, final double h) {
          path.reset();
          path.moveTo(x + w, y);
          path.lineTo(x, y + h / 2.0);
          path.lineTo(x + w, y + h);
          path.closePath();
  
          return path;
      }
docs: Return a path for an arrow pointing to the left.
  
  @param  x the X coordinate of the upper-left corner of the arrow
  @param  y the Y coordinate of the upper-left corner of the arrow
  @param  w the width of the arrow
  @param  h the height of the arrow
  
  @return a path representing the shape.