public async Task <RatingDTO> AddRating(long companyId, RatingDTO rating) { if (companyId > 0 && rating != null) { var ratingDB = _companyMapper.ToRating(rating); var result = await _statisticRepository.AddRating(companyId, ratingDB); var ratingDTO = _companyMapper.ToRatingDTO(result); return(ratingDTO); } return(null); }