code: def x0() -> Dict[str, Any]:
      return {
          "c": "a",
          "d": -1,
          "i": -1,
          "ii": -1,
          "il": 2,
          "l": 0.001,
          "u": -2,
      }
  
imports: import math
  from typing import Any
  from typing import Dict
  from unittest.mock import call
  from unittest.mock import patch
  import warnings
  import _pytest.capture
  import pytest
  import optuna
  from optuna._imports import try_import
  from optuna.distributions import BaseDistribution
  from optuna.distributions import CategoricalDistribution
  from optuna.distributions import FloatDistribution
  from optuna.distributions import IntDistribution
  from optuna.integration.cma import _Optimizer
  from optuna.study._study_direction import StudyDirection
  from optuna.testing.distributions import UnsupportedDistribution
  from optuna.testing.trials import _create_frozen_trial
  from optuna.trial import Trial
  from optuna.trial import TrialState
label_desc: Use image node_id 2 for calling the TestOptimizer obj's underlying member method code with example usage: obj.x0() and returns: dict