public static Snowflake getSnowflake(long workerId, long datacenterId) {
		return Singleton.get(Snowflake.class, workerId, datacenterId);
	}
@Test
	public void getSnowflakeTest() {
		Snowflake snowflake = IdUtil.getSnowflake(1, 1);
		long id = snowflake.nextId();
		assertTrue(id > 0);
	}