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

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

            return(Insert <int>(new EmployeeClassification(classification)));
        }