public void TestGetDecimalWithIsDBNullCheck()
        {
            var reader = new ListDataReader <Student>(_Students);

            reader.Read();
            var col = "Decimal2";

            Assert.Equal(4M, reader.GetDecimalWithNull(col).Value);
            reader.Read();
            Assert.False(reader.GetDecimalWithNull(col).HasValue);
            reader.Read();
            Assert.Equal(5M, reader.GetDecimalWithNull(col).Value);
        }