code: def inspect_file(self, commit, path):
          
          req = proto.InspectFileRequest(file=proto.File(commit=commit_from(commit), path=path))
          res = self.stub.InspectFile(req, metadata=self.metadata)
          return res
docs: Returns info about a specific file.
  
          Params:
          * commit: A tuple, string, or Commit object representing the commit.
          * path: Path to file.