code: def setUp(self):
      super().setUp()
      self.cfg = config._read("jax_debug_nans")
      config.update("jax_debug_nans", True)
  
imports: from absl.testing import absltest
  import jax
  import numpy
  from unittest import SkipTest
  from jax._src import api
  from jax._src import test_util
  from jax import numpy
  from jax.experimental import pjit, maps
  from jax import config
label_desc: Use image node_id 1 for calling the DebugNaNsTest obj's underlying member method code with example usage: obj.setUp() without return types