public IEnumerable <T> IterTest01 <T>(IEnumerable <T> source, Action <T, int> action)
{
IEnumerable <T> result = EnumerableExtension.Iter <T>(source, action);
return(result);
// TODO: add assertions to method EnumerableExtensionTest.IterTest01(IEnumerable`1<!!0>, Action`2<!!0,Int32>)
}