def _next_dir_gen(self, root):
    for e in root.getiterator(common._T_COMMON_PREFIXES):
      yield common.GCSFileStat(
          self._path + '/' + e.find(common._T_PREFIX).text,
          st_size=None, etag=None, st_ctime=None, is_dir=True)
      e.clear()
    yield None
Generator for next directory element in the document.
dataset/ETHPy150Open GoogleCloudPlatform/appengine-opencv-sudoku-python/cloudstorage/cloudstorage_api.py/_Bucket._next_dir_gen