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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 _event_func_names(self, event: str) -> List[str]: """ Returns string name of each function subscribed to an event. :param event: Name of the event. :type event: str :return: Names of functions subscribed to a specific event. :rtype: list """

        return [func.__name__ for func in self._events[event]]