search class type for methods (#23689)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/23689
We store methods, no reason to try to lock the CU to find a method on a
class type
Test Plan: Imported from OSS
Differential Revision: D16610045
Pulled By: suo
fbshipit-source-id: d84ad81faa42c4e2da20b666fa3645e22f11dac3