code: def testListdir(self):
      temp_dir = self.get_temp_dir()
      self._CreateDeepDirectoryStructure(temp_dir)
      expected_files = (
          "foo",
          "bar",
          "quuz",
          "a.tfevents.1",
          "model.ckpt",
          "waldo",
      )
      got = gfile.listdir(temp_dir)
      self.assertCountEqual(expected_files, got)
  
imports: import posixpath
  from tensorboard import test
  from tensorboard.compat.tensorflow_stub import errors
  from tensorboard.compat.tensorflow_stub.io import gfile
  import fsspec
label_desc: Use image node_id 5 for calling the GFileFSSpecTest obj's underlying member method code with example usage: obj.testListdir() without return types