code: def test_accountant_state_dict(self) -> None:
      noise_multiplier = 1.5
      sample_rate = 0.04
      steps = int(90 / 0.04)
  
      accountant = RDPAccountant()
      for _ in range(steps):
          accountant.step(
              noise_multiplier=noise_multiplier, sample_rate=sample_rate
          )
  
      dummy_dest = {"dummy_k": "dummy_v"}
      # history should be equal but not the same instance
      self.assertEqual(
          accountant.state_dict()["history"], accountant.history
      )
      self.assertFalse(
          accountant.state_dict()["history"] is accountant.history
      )
      # mechanism populated to supplied dict
      self.assertEqual(
          accountant.state_dict(dummy_dest)["mechanism"],
          accountant.mechanism,
      )
      # existing values in supplied dict unchanged
      self.assertEqual(
          accountant.state_dict(dummy_dest)["dummy_k"],
          dummy_dest["dummy_k"],
      )
  
file_path: opacus/opacus/tests/accountants_test.py
imports: import unittest
  import hypothesis.strategies
  from hypothesis import given, settings
  from opacus.accountants import GaussianAccountant, PRVAccountant, RDPAccountant, create_accountant
  from opacus.accountants.utils import get_noise_multiplier
label_desc: Use image node_id 10 for calling the AccountingTest obj's underlying member method code with example usage: obj.test_accountant_state_dict() without return types