code: def test_simple_exclusion_remove_frames(self):
      class Test1(nn.Module):
          @nn.remat
          @nn.compact
          def __call__(self, x):
              return Test2()(x)
  
      class Test2(nn.Module):
          @nn.jit
          @nn.compact
          def __call__(self, x):
              raise ValueError("error here.")
              return x  # pylint: disable=unreachable
  
      traceback_util.hide_flax_in_tracebacks()
      jax.config.update("jax_traceback_filtering", "remove_frames")
  
      key = random.key(0)
      try:
          nn.jit(Test1)().init(key, jnp.ones((5, 3)))
      except ValueError as e:
          tb_filtered = e.__traceback__
          tb_unfiltered = e.__cause__.__traceback__
          e_cause = e.__cause__
  
      self.assertIsInstance(
          e_cause, jax_traceback_util.UnfilteredStackTrace
      )
  
      filtered_frames = 0
      for _, _ in traceback.walk_tb(tb_filtered):
          filtered_frames += 1
  
      unfiltered_frames = 0
      for _, _ in traceback.walk_tb(tb_unfiltered):
          unfiltered_frames += 1
  
      self.assertEqual(filtered_frames, 3)
      self.assertGreater(unfiltered_frames, filtered_frames)
  
file_path: flax/tests/traceback_util_test.py
imports: import contextlib
  import sys
  import traceback
  import jax
  from absl.testing import absltest
  from jax import numpy
  from jax import random
  from jax._src import traceback_util
  from flax import linen
  from flax import traceback_util
label_desc: Use image node_id 3 for calling the TracebackTest obj's underlying member method code with example usage: obj.test_simple_exclusion_remove_frames() and returns: Test2, x