public static DateTime endOfQuarter(Date date) {
		return new DateTime(endOfQuarter(calendar(date)));
	}
@Test
	public void endOfQuarterTest() {
		final Date date = DateUtil.endOfQuarter(
				DateUtil.parse("2020-05-31 00:00:00"));

		assertEquals("2020-06-30 23:59:59", DateUtil.format(date, "yyyy-MM-dd HH:mm:ss"));
	}