code: def testInsideFunction(self):
      if test_util.is_gpu_available():
          self.skipTest(
              "b/123899495: Colocation errors for critical sections in map on GPU"
          )
      cs = critical_section_ops.CriticalSection()
      with ops.device(
          "/gpu:0" if test_util.is_gpu_available() else "/cpu:0"
      ):
          v = resource_variable_ops.ResourceVariable(1)
  
      def fn():
          return v.read_value()
  
      # map() creates a TensorFlow function.
      ds = dataset_ops.Dataset.range(1)
      if test_util.is_gpu_available():
          ds = ds.apply(prefetching_ops.copy_to_device("/gpu:0")).apply(
              prefetching_ops.map_on_gpu(lambda _: cs.execute(fn))
          )
      else:
          ds = ds.map(lambda _: cs.execute(fn))
  
      def get_first():
          if context.executing_eagerly():
              return self.evaluate(
                  dataset_ops.make_one_shot_iterator(ds).get_next()
              )
          itr = dataset_ops.make_initializable_iterator(ds)
          self.evaluate([v.initializer, itr.initializer])
          return self.evaluate(itr.get_next())
  
      self.assertEqual(1, get_first())
  
imports: import itertools
  from absl.testing import parameterized
  from tensorflow.python.data.experimental.ops import prefetching_ops
  from tensorflow.python.data.ops import dataset_ops
  from tensorflow.python.eager import context
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import ops
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import array_ops
  from tensorflow.python.ops import cond
  from tensorflow.python.ops import control_flow_assert
  from tensorflow.python.ops import control_flow_ops
  from tensorflow.python.ops import control_flow_v2_toggles
  from tensorflow.python.ops import critical_section_ops
  from tensorflow.python.ops import resource_variable_ops
  from tensorflow.python.ops import while_loop
  from tensorflow.python.platform import test
  from tensorflow.python.platform import tf_logging
label_desc: Use image node_id 12 for calling the CriticalSectionTest obj's underlying member method code with example usage: obj.testInsideFunction() and returns: v, self, self