public Task HandleAsync(T @event)
 => _inbox.Enabled
         ? _inbox.HandleAsync(@event, () => _handler.HandleAsync(@event), _module)
         : _handler.HandleAsync(@event);
 public Task HandleAsync(T command)
 => _inbox.Enabled
         ? _inbox.HandleAsync(command, () => _handler.HandleAsync(command), _module)
         : _handler.HandleAsync(command);