public async Task <SessionModelResponse> AddOrUpdateSession(SessionModelRequest session)
        {
            _sessionRepository.DeleteServiceFromSession(session.Id);

            int id = await _sessionRepository.AddOrUpdateSession(Mapper.Map <DalSessionModelRequest>(session));

            if (session.ServiceIds != null)
            {
                foreach (var service in session.ServiceIds)
                {
                    DalSessionServiceModel sessionService = new DalSessionServiceModel(session.Id, service);

                    _sessionRepository.AddServiceToSession(sessionService);
                }
            }

            return(await GetSessionById(session.Id) ?? throw new InvalidOperationException());
        }