public static Week dayOfWeek(LocalDate localDate) {
		return Week.of(localDate.getDayOfWeek());
	}
@Test
	public void dayOfWeekTest() {
		final Week one = LocalDateTimeUtil.dayOfWeek(LocalDate.of(2021, 9, 20));
		assertEquals(Week.MONDAY, one);

		final Week two = LocalDateTimeUtil.dayOfWeek(LocalDate.of(2021, 9, 21));
		assertEquals(Week.TUESDAY, two);

		final Week three = LocalDateTimeUtil.dayOfWeek(LocalDate.of(2021, 9, 22));
		assertEquals(Week.WEDNESDAY, three);

		final Week four = LocalDateTimeUtil.dayOfWeek(LocalDate.of(2021, 9, 23));
		assertEquals(Week.THURSDAY, four);

		final Week five = LocalDateTimeUtil.dayOfWeek(LocalDate.of(2021, 9, 24));
		assertEquals(Week.FRIDAY, five);

		final Week six = LocalDateTimeUtil.dayOfWeek(LocalDate.of(2021, 9, 25));
		assertEquals(Week.SATURDAY, six);

		final Week seven = LocalDateTimeUtil.dayOfWeek(LocalDate.of(2021, 9, 26));
		assertEquals(Week.SUNDAY, seven);
	}