code: public Shape createRoundRectangle(final int x, final int y, final int w, final int h, final CornerSize size) {
          return createRoundRectangle(x, y, w, h, size, CornerStyle.ROUNDED, CornerStyle.ROUNDED, CornerStyle.ROUNDED, CornerStyle.ROUNDED);
      }
docs: Return a path for a rectangle with rounded corners.
  
  @param  x    the X coordinate of the upper-left corner of the rectangle
  @param  y    the Y coordinate of the upper-left corner of the rectangle
  @param  w    the width of the rectangle
  @param  h    the height of the rectangle
  @param  size the CornerSize value representing the amount of rounding
  
  @return a path representing the shape.