def listTree(self, commit, dirname=None):
        key = (commit, dirname)
        try:
            return self.__treeCache[key]
        except __HOLE__:
            result = self.__repo.listTree(commit, dirname=dirname)
            self.__treeCache[key] = result
            return result
dataset/ETHPy150Open facebookarchive/git-review/src/gitreview/review/cli_reviewer.py/RepoCache.listTree