public void ToStringValue_ShouldConvertIntEnumerableToStringValueEnumerable()
        {
            var ints = new[] {1, 2, 3, 4};
            var enumerator = ints.ToStringValues().GetEnumerator();

            enumerator.MoveNext();
            Assert.That(enumerator.Current.Value, Is.EqualTo("01"));
            enumerator.MoveNext();
            Assert.That(enumerator.Current.Value, Is.EqualTo("02"));
            enumerator.MoveNext();
            Assert.That(enumerator.Current.Value, Is.EqualTo("03"));
            enumerator.MoveNext();
            Assert.That(enumerator.Current.Value, Is.EqualTo("04"));
        }