public static boolean del(Path path) throws IORuntimeException {
		if (Files.notExists(path)) {
			return true;
		}

		try {
			if (isDirectory(path)) {
				Files.walkFileTree(path, DelVisitor.INSTANCE);
			} else {
				delFile(path);
			}
		} catch (IOException e) {
			throw new IORuntimeException(e);
		}
		return true;
	}
@Test
	@Disabled
	public void delDirTest(){
		PathUtil.del(Paths.get("d:/test/looly"));
	}