Starts a healthcheck task for `recipient` and returns a
        HealthEvents with locks to react on its current state.

def get_health_events(self, recipient):
        """ Starts a healthcheck task for `recipient` and returns a
        HealthEvents with locks to react on its current state.
        """
        if recipient not in self.addresses_events:
            self.start_health_check(recipient)

        return self.addresses_events[recipient]