public void Update(EmployeeSimple employee)
        {
            if (employee == null)
            {
                throw new ArgumentNullException(nameof(employee), $"{nameof(employee)} is null.");
            }

            base.Update(employee);
        }
        public int Create(EmployeeSimple employee)
        {
            if (employee == null)
            {
                throw new ArgumentNullException(nameof(employee), $"{nameof(employee)} is null.");
            }

            return(Insert <EmployeeSimple, int>(employee));
        }