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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 publish(self, event_type: str, event_data: dict = None):
 """Publish an event associated with the scheduling object. Note: Ideally publish should not be used directly but by other methods which perform actions on the object. Args: event_type (str):
 Type of event. event_data (dict, optional):
 Event data. """

        import inspect
        import os.path
        _stack = inspect.stack()
        _origin = os.path.basename(_stack[3][1]) + '::' + \
            _stack[3][3]+'::L{}'.format(_stack[3][2])

        publish(event_type=event_type,
                event_data=event_data,
                object_type=self._type,
                object_id=self._id,
                object_key=self._key,
                origin=_origin)