assertTrue("Expecting instance of UserPrime.", usersPrime.get(0) instanceof UserPrime);
assertTrue("Expecting instance of UserPrime.", usersPrime.get(1) instanceof UserPrime);
assertEquals("SUCCESS", userGroupPrime.getStatusPrime().name());
// Map the other way
UserGroup userGroupMapBack = mapper.map(userGroupPrime, UserGroup.class);
Set<?> usersGroupPrime = userGroupMapBack.getUsers();
assertNotNull(usersGroupPrime);
assertEquals(2, usersGroupPrime.size());
assertTrue("Expecting instance of UserPrime.", usersGroupPrime.iterator().next() instanceof User);
}