Improve IMethod::getArgumentNames to deal with empty argument names list (#62947)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/62947
This diff improved IMethod::getArgumentNames to deal with empty argument names list.
Test Plan:
buck test mode/dev //caffe2/caffe2/fb/predictor:pytorch_predictor_test -- PyTorchDeployPredictor.GetEmptyArgumentNamesValidationMode
buck test mode/dev //caffe2/caffe2/fb/predictor:pytorch_predictor_test -- PyTorchDeployPredictor.GetEmptyArgumentNamesRealMode
Reviewed By: wconstab
Differential Revision: D30179974
fbshipit-source-id: c7aec35c360a73318867c5b77ebfec3affee47e3
