code: public PdfPatternPainter createPattern(float width, float height, Color color) {
          return createPattern(width, height, width, height, color);
      }
docs: Create a new uncolored tiling pattern.
  Variables xstep and ystep are set to the same values
  of width and height.
  @param width the width of the pattern
  @param height the height of the pattern
  @param color the default color. Can be <CODE>null</CODE>
  @return the <CODE>PdfPatternPainter</CODE> where the pattern will be created