public static Instant toInstant(Date date) {
		return null == date ? null : date.toInstant();
	}
@Test
	public void toInstantTest() {
		final LocalDateTime localDateTime = LocalDateTime.parse("2017-05-06T08:30:00", DateTimeFormatter.ISO_DATE_TIME);
		Instant instant = DateUtil.toInstant(localDateTime);
		assertEquals("2017-05-06T00:30:00Z", instant.toString());

		final LocalDate localDate = localDateTime.toLocalDate();
		instant = DateUtil.toInstant(localDate);
		assertNotNull(instant);

		final LocalTime localTime = localDateTime.toLocalTime();
		instant = DateUtil.toInstant(localTime);
		assertNotNull(instant);
	}