def METHOD_NAME():
    counter = PythonUtil.AlphabetCounter()
    assert next(counter) == 'A'
    assert counter.next() == 'B'
    assert counter.next() == 'C'
    assert next(counter) == 'D'
    for i in range(26 - 4):
        next(counter)
    assert next(counter) == 'AA'
    assert next(counter) == 'AB'