Method cancel

app/api/tasks.py:162–163

(self, *args, **kwargs)

    @action(detail=True, methods=['post'])
    def cancel(self, *args, **kwargs):
        return self.set_pending_action(pending_actions.CANCEL, *args, **kwargs)

    @action(detail=True, methods=['post'])
    def restart(self, *args, **kwargs):