public static LocalDateTime beginOfDay(LocalDateTime time) {
		return time.with(LocalTime.MIN);
	}
@Test
	public void beginOfDayTest() {
		final LocalDateTime localDateTime = LocalDateTimeUtil.parse("2020-01-23T12:23:56");
		final LocalDateTime beginOfDay = LocalDateTimeUtil.beginOfDay(localDateTime);
		assertEquals("2020-01-23T00:00", beginOfDay.toString());
	}