add method
Implementation
@override
void add(IProcessHandler handler) {
_l.debug('DefaultProcessingRepository.add(${handler.code} - ${handler.name}) starting');
final list = _handlers.containsKey(handler.code) ? _handlers[handler.code]! : <IProcessHandler>[];
list.add(handler);
_handlers[handler.code] = list;
_l.debug('DefaultProcessingRepository.add(${handler.code} - ${handler.name}) added:${list.length} done');
}