public Task <bool> Handle(DeleteArtistEntryRequest request, CancellationToken cancellationToken)
            {
                IArtistEntry artist = _artistService.Get(request.ArtistEntryId);

                foreach (string dateId in artist.DateEntryIDs)
                {
                    _datesService.Remove(dateId);
                }

                return(Task.FromResult(_artistService.Remove(request.ArtistEntryId)));
            }
            public Task <bool> Handle(DeleteDateEntryRequest request, CancellationToken cancellationToken)
            {
                IArtistEntry artist       = _artistService.Get(request.ArtistId);
                bool         removeResult = _datesService.Remove(request.DateId);

                artist.DateEntryIDs.Remove(request.DateId);

                if (artist.DateEntryIDs.Count > 0)
                {
                    _artistService.Update(request.ArtistId, artist);

                    return(Task.FromResult(removeResult));
                }

                return(Task.FromResult(_artistService.Remove(artist.Id)));
            }