public async Task <ActionResult <IEnumerable <AttendeeViewModel> > > GetAttendeesForItemId(string itemId, [FromQuery] AttendeeResourceParameters parameters)
        {
            if (!await _itemRepository.ExistItemByIdAsync(itemId))
            {
                return(NotFound());
            }

            var skipNumber = parameters.PageSize * (parameters.PageNumber - 1);
            var takeNumber = parameters.PageSize;

            var entities = await _attendeeRepository.GetAttendeesForItemIdAsync(itemId, skipNumber, takeNumber);

            var models = _mapper.Map <IEnumerable <AttendeeViewModel> >(entities);

            return(Ok(models));
        }