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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 next(self):
 """ for iteration over the header entries """

        if self._current < len(self._record_list):
            rec = self._record_list[self._current]
            key = rec['name']
            self._current += 1
            return key
        else:
            raise StopIteration