public GetActivityForActivitiesPanelByIdHandler( IActivitiesRepository activitiesRepository, ActivityForActivitiesPanelMapper activityForActivitiesPanelMapper) { _activitiesRepository = activitiesRepository ?? throw new ArgumentNullException(nameof(activitiesRepository)); _activityForActivitiesPanelMapper = activityForActivitiesPanelMapper ?? throw new ArgumentNullException(nameof(activityForActivitiesPanelMapper)); }