@Test
 public void isBigDecimalNotZero() {
   assertEquals(false, NumberHelper.isNotZero((BigDecimal) null));
   assertEquals(false, NumberHelper.isNotZero(BigDecimal.ZERO));
   assertEquals(false, NumberHelper.isNotZero(new BigDecimal("0").setScale(3)));
   assertEquals(true, NumberHelper.isNotZero(new BigDecimal("1")));
 }
 @Test
 public void isIntegerNotZero() {
   assertEquals(false, NumberHelper.isNotZero((Integer) null));
   assertEquals(false, NumberHelper.isNotZero(0));
   assertEquals(true, NumberHelper.isNotZero(1));
 }