code: def test_adder(
      self,
      n_step,
      additional_discount,
      first,
      steps,
      expected_transitions,
  ):
      adder = adders.NStepTransitionAdder(
          self.client, n_step, additional_discount
      )
      super().run_test_adder(
          adder=adder,
          first=first,
          steps=steps,
          expected_items=expected_transitions,
          stack_sequence_fields=False,
          signature=adder.signature(*test_utils.get_specs(steps[0])),
      )
  
file_path: acme/acme/adders/reverb/transition_test.py
imports: from acme.adders.reverb import test_cases
  from acme.adders.reverb import test_utils
  from acme.adders.reverb import transition
  from absl.testing import absltest
  from absl.testing import parameterized
label_desc: Use image node_id 1 for calling the NStepTransitionAdderTest obj's underlying member method code with example usage: obj.test_adder(n_step, additional_discount, first, steps, expected_transitions) without return types