Support variadic returns in Schema's operator<< (#23204)
Summary:
old: prim::PythonOp(...) ->
new: prim::PythonOp(...) -> ...
Pull Request resolved: https://github.com/pytorch/pytorch/pull/23204
ghstack-source-id: 87208343
Reviewed By: zrphercule
Differential Revision: D16433592
fbshipit-source-id: 36cbb329188f112e09c3b1708a8090781b830dfe
