final EURCurrency euro = new EURCurrency();
final CHFCurrency chf2 = new CHFCurrency();
assertFalse(euro.eq(chf));
assertTrue(euro.ne(chf));
assertFalse(chf2.ne(chf));
assertTrue(chf2.eq(chf));
assertFalse(euro.eq(null));
assertTrue(chf.eq(chf2));
assertTrue(chf.eq(chf));