begin transaction (the unit test)
for (int i=1; i<10; i++) {
  Identifier identifier = entityManager.find(Identifier.class, domain, LockModeType.PESSIMISTIC_READ);
  long result = identifier.getLastId();
  identifier.setLastId(result+1);
  System.out.println(identifier + " with RESULT=" + result);
}
commit transaction (done by the unit test)

Identifier@2aa2f9e6 with RESULT=1
Identifier@2aa2f9e6 with RESULT=1
...
Identifier@2aa2f9e6 with RESULT=1