{
PersistenceBroker pb = PersistenceBrokerFactory.defaultPersistenceBroker();
FieldDescriptor field = pb.getClassDescriptor(targetClass).getAutoIncrementFields()[0];
Integer val = (Integer) pb.serviceSequenceManager().getUniqueValue(field);
int id1 = val.intValue();
val = (Integer) pb.serviceSequenceManager().getUniqueValue(field);
int id2 = val.intValue();
assertTrue(id1 != id2);
assertTrue(id2 > id1);
assertTrue("If the sequence manger implementation does not support continuous key generation" +
" per PB instance, you could ignore this failure", (id2 - id1) == 1);