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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 get_rows(self, sort=False):
 """ Returns the rows of this Type2Helper. :param bool sort: If True the rows are sorted by the pseudo key. """

        ret = []
        for _, rows in sorted(self._rows.items()) if sort else self._rows.items():
            self._rows_int2date(rows)
            ret.extend(rows)

        return ret