Returns info about a specific file.

        Params:
        * commit: A tuple, string, or Commit object representing the commit.
        * path: Path to file.

def inspect_file(self, commit, path):
        """
        Returns info about a specific file.

        Params:
        * commit: A tuple, string, or Commit object representing the commit.
        * path: Path to file.
        """
        req = proto.InspectFileRequest(file=proto.File(commit=commit_from(commit), path=path))
        res = self.stub.InspectFile(req, metadata=self.metadata)
        return res