assertTrue(result.contains(casey));
result = users.query().whereSomeDatetime(JackMatchers.<Long>isNull()).find();
assertEquals(3, result.size());
result = users.query().whereSomeDatetime(JackMatchers.<Long>isNotNull()).find();
assertEquals(2, result.size());
assertTrue(result.contains(brandon));
assertTrue(result.contains(james));
// If a null parameter is passed, an exeception should be thrown