code: def dummy_log(*args, **kwargs):
      # replaces calls to self.log() which otherwise require the pytorch lighting trainer to be intialized
      return None
  
imports: import unittest
  import torch
  from reagent.core.parameters import EvaluationParameters, RLParameters
  from reagent.core.types import DiscreteDqnInput, ExtraData, FeatureData
  from reagent.evaluation.evaluator import get_metrics_to_score
  from reagent.models.actor import FullyConnectedActor
  from reagent.models.dqn import FullyConnectedDQN
  from reagent.training.discrete_crr_trainer import DiscreteCRRTrainer
  from reagent.training.parameters import CRRTrainerParameters
  from reagent.workflow.types import RewardOptions
label_desc: Use image node_id 2 for calling the TestCRR obj's underlying member method code with example usage: obj.dummy_log() and returns: None