public async Task <IActionResult> Put(FrequencyForEditDTO model)
        {
            Frequency frequency = mapper.Map <Frequency>(model);

            frequencyRepository.Edit(frequency);
            await unitOfWork.CompleteAsync().ConfigureAwait(true);

            return(Ok(mapper.Map <FrequencyForGetDTO>(await frequencyRepository.Get(frequency.Id).ConfigureAwait(true))));
        }