code: def test_simple_exclusion_tracebackhide(self):
      if not TRACEBACKHIDE_SUPPORTED:
          return
  
      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", "tracebackhide")
  
      key = random.key(0)
      try:
          nn.jit(Test1)().init(key, jnp.ones((5, 3)))
      except ValueError as e:
          tb = e.__traceback__
  
      filtered_frames = 0
      unfiltered_frames = 0
  
      for f, _ in traceback.walk_tb(tb):
          if "__tracebackhide__" not in f.f_locals:
              self.assertIn(f.f_code.co_filename, EXPECTED_FILES)
              filtered_frames += 1
          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 2 for calling the TracebackTest obj's underlying member method code with example usage: obj.test_simple_exclusion_tracebackhide() and returns: Test2, x