public int toBaseUnitsRounded() {
		return (int) (toBaseUnits() + 0.5d);
	}
@Test
    public void calculateRoundedDownValueInBaseUnits() throws Exception {
        Quantity<Metrics> quantity = new Quantity<Metrics>(49, Metrics.cm);
        assertThat(quantity.toBaseUnitsRounded()).isEqualTo(0);
    }