public void RemoveById(int clientId)
        {
            if (!clientTableRepository.ContainsById(clientId))
            {
                throw new ArgumentException($"Client with Id {clientId} doesn't exist");
            }
            ClientEntity client = clientTableRepository.GetById(clientId);

            clientTableRepository.Remove(client);
            clientTableRepository.SaveChanges();
        }
        public string RemoveClient(int clientId)
        {
            string result = clientTableRepository.Remove(clientId);

            return(result);
        }