public WorkingState getWorkingState(RepositoryObject object) {

 WorkingState result = null;

 synchronized(m_lock) {

  for (RepositorySet set: m_repositorySets) {

   result = set.getWorkingState(object);

   if (result != null) {

    break;

   }

  }

 }

 return (result == null) ? WorkingState.Unchanged : result;

}