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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 abort_running(self) -> bool: """ Executes a hard abort by shutting down the event loop in this thread in which the running command was operating. This is carried out using the asyncio library to prevent the stopped execution from destabilizing the Python environment. """


        if not self._loop:
            return False

        try:
            self._loop.stop()
            return True
        except Exception:
            return False
        finally:
            self.completed_at = datetime.utcnow()