/// <inheritdoc />
        public void AddBankUser(DalBankUser bankUser)
        {
            if (ReferenceEquals(bankUser, null))
            {
                throw new ArgumentNullException(nameof(bankUser));
            }

            try
            {
                var ormBankUser = bankUser.ToOrmBankUser();
                _dbContext.Set <BankUser>().Add(ormBankUser);
            }
            catch (Exception e)
            {
                throw new RepositoryException("Add user error.", e);
            }
        }