if (this.isDecorated((IFolder) element)) return image; this.addToDecorated((IFolder) element);
	public Image decorateImage(Image image, Object element) {		if (!(element instanceof IFolder))			return image;		if (!WOLipsProject.isWOProjectResource((IResource) element))			return image;		//avoid memory leak		if (this.isDecorated((IFolder) element))			return image;		this.addToDecorated((IFolder) element);		String extension = ((IFolder) element).getFileExtension();		return this.imageForExtension(image, extension);	}