private void deleteCommand(CommandLineApplication command)
        {
            var idOption = command.Option("-id", "Guid of the map entry", CommandOptionType.SingleValue);

            command.OnExecute(() =>
            {
                if (!idOption.HasValue())
                {
                    command.Out.WriteLine("-id is required");
                    return(-1);
                }

                var map = _mapService.FindOneAsync(Guid.Parse(idOption.Value())).Result;

                if (map == null)
                {
                    command.Out.WriteLine($"No map with id {idOption.Value()} found.");
                    return(-1);
                }
                command.Out.WriteLine($"Deleting map {map.Id} (Description={map.Description}, IsBrowseable={map.IsBrowseable})");

                _mapService.DeleteOneAsync(map.Id).Wait();
                _imageService.DeleteOneAsync(map.ImageId).Wait();

                return(0);
            });
        }