'labelupdate' => sub {
            print "process_modules - Debug: Calling WriteoutLabel with active_modules_ref:\n" if $DEBUG;
            foreach my $key (keys %$active_modules_ref) {
                print "  $key => $active_modules_ref->{$key}\n" if $DEBUG;
            }
            Label::WriteoutLabel($active_modules_ref);  # Pass as a reference