// test cases
cases = new Object[][] {
// referentUuid1, referentUuid2, expectedResult
{null, null, t},
{null, new FakeReferentUuid(u1), f},
{new FakeReferentUuid(u1), null, f},
{new FakeReferentUuid(u1), new FakeReferentUuid(u1), t},
{new FakeReferentUuid(u2), new FakeReferentUuid(u1), f},
{new Object(), new FakeReferentUuid(u1), f},
{new FakeReferentUuid(u1), new Object(), f},
{new Object(), new Object(), f}
};
}