private synchronized void syncUsers(){
  try {
    users.clear();
    users.addAll(provider.loadUsers());
  }
 catch (  final CouldntLoadDataException exception) {
    CUtilityFunctions.logException(exception);
  }
}

private synchronized void syncUsers ( ) { try { users . clear ( ) ; users . addAll ( provider . loadUsers ( ) ) ; } catch ( final CouldntLoadDataException exception ) { CUtilityFunctions . logException ( exception ) ; } }
synchronizes the internal list of known users with the list of known users in the database .
