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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 stdrepr_iterable(self, obj, *, cls=None, before=None, after=None):
 """ Helper function to represent iterables. StdHRepr calls this on lists, tuples, sets and frozensets, but NOT on iterables in general. This method may be called to produce custom representations. Arguments: obj (iterable):
 The iterable to represent. cls (optional):
 The class name for the representation. If None, stdrepr will use ``'hrepr-' + obj.__class__.___name__`` before (optional):
 A string or a Tag to prepend to the elements. after (optional):
 A string or a Tag to append to the elements. """

        if cls is None:
            cls = f'hrepr-{obj.__class__.__name__}'
        children = [self(a) for a in obj]
        return self.titled_box((before, after), children, 'h', 'h')[cls]