docs: public Img cut(Rectangle rectangle) {
  		final BufferedImage srcImage = getValidSrcImg();
  		rectangle = fixRectangle(rectangle, srcImage.getWidth(), srcImage.getHeight());
  
  		final ImageFilter cropFilter = new CropImageFilter(rectangle.x, rectangle.y, rectangle.width, rectangle.height);
  		final Image image = Toolkit.getDefaultToolkit().createImage(new FilteredImageSource(srcImage.getSource(), cropFilter));
  		this.targetImage = ImgUtil.toBufferedImage(image);
  		return this;
  	}