Method apply

celery/canvas.py:1631–1641

(self, args=None, kwargs=None, **options)

        return result

    def apply(self, args=None, kwargs=None, **options):
        args = args if args else ()
        kwargs = kwargs if kwargs else {}
        app = self.app
        if not self.tasks:
            return self.freeze()  # empty group returns GroupResult
        options, group_id, root_id = self._freeze_gid(options)
        tasks = self._prepared(self.tasks, [], group_id, root_id, app)
        return app.GroupResult(group_id, [
            sig.apply(args=args, kwargs=kwargs, **options) for sig, _, _ in tasks
        ])

    def set_immutable(self, immutable):
        for task in self.tasks: