code: def test_isdir(self, create_temp_fn):
      with create_temp_fn() as temp:
          path = temp.name if hasattr(temp, "name") else temp
  
          with io.override_mode(io.BackendMode.DEFAULT):
              default_isdir = io.isdir(path)
  
          with io.override_mode(io.BackendMode.TF):
              tf_isdir = io.isdir(path)
  
          self.assertEqual(default_isdir, tf_isdir)
  
imports: import os
  import tempfile
  import jax
  import tensorflow
  from absl.testing import absltest, parameterized
  from flax import errors, io
label_desc: Use image node_id 4 for calling the IOTest obj's underlying member method code with example usage: obj.test_isdir(create_temp_fn) without return types