docs: protected ImageDescriptor handleImageDescriptorError(Object[] params, Throwable exception) {
  		if (exception instanceof NullPointerException) {
  			final Object defaultImage = getDefaultImage();
  			if (defaultImage instanceof ImageDescriptor) {
  				return (ImageDescriptor) defaultImage;
  			}
  			if (defaultImage instanceof Image) {
  				return ImageDescriptor.createFromImage((Image) defaultImage);
  			}
  			return super.imageDescriptor(params[0]);
  		}
  		return Exceptions.throwUncheckedException(exception);
  	}