System.Data.Common.DataTableMappingCollection.ValidateType C# (CSharp) Method

        private void ValidateType(object value)
        {
            if (null == value)
            {
                throw ADP.TablesAddNullAttempt(nameof(value));
            }
            else if (!ItemType.IsInstanceOfType(value))
            {
                throw ADP.NotADataTableMapping(value);
            }
        }