pytorch

de819be9 - refactor self to be a class again

refactor self to be a class again Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/22722 Test Plan: Imported from OSS Differential Revision: D16197607 Pulled By: suo fbshipit-source-id: b4dd96b3f9cc46b48678aab0ff89afc3666e2185