-# Creates get_all, get_all_count, get_all_iterator, delete_all and update_all.
-__PACKAGE__->meta->make_manager_class;
+ return undef if !$self->id;
+ my $is_used = SL::DB::Manager::DptTrans->find_by(department_id => $self->id);
+ return !!$is_used;
+}