code: public Shape createScrollCap(int x, int y, int w, int h) {
          path.reset();
          path.moveTo(x, y);
          path.lineTo(x, y + h);
          path.lineTo(x + w, y + h);
          addScrollGapPath(x, y, w, h, true);
          path.closePath();
  
          return path;
      }
docs: Return a path for a scroll bar cap. This is used when the buttons are
  placed together at the opposite end of the scroll bar.
  
  @param  x the X coordinate of the upper-left corner of the cap
  @param  y the Y coordinate of the upper-left corner of the cap
  @param  w the width of the cap
  @param  h the height of the cap
  
  @return a path representing the shape.