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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _iterContours(self, **kwargs):
 """ This must return an iterator that returns wrapped contours. Subclasses may override this method. """

        count = len(self)
        index = 0
        while count:
            yield self[index]
            count -= 1
            index += 1