public static Integer getInt(Map<?, ?> map, Object key) {
		return get(map, key, Integer.class);
	}
@Test
	public void getIntTest(){
		assertThrows(NumberFormatException.class, () -> {
			final HashMap<String, String> map = MapUtil.of("age", "d");
			final Integer age = MapUtil.getInt(map, "age");
			assertNotNull(age);
		});
	}