code: def configure_optimizers(self):
      return [
          o
          for t in self.world_model_trainers
          for o in t.configure_optimizers()
      ]
  
file_path: ReAgent/reagent/training/cem_trainer.py
imports: import logging
  from typing import List
  import reagent.core.types
  import torch.nn
  from reagent.core.parameters import CEMTrainerParameters
  from reagent.models.cem_planner import CEMPlannerNetwork
  from reagent.training.reagent_lightning_module import ReAgentLightningModule
  from reagent.training.world_model.mdnrnn_trainer import MDNRNNTrainer
label_desc: Use image node_id 2 for calling the CEMTrainer obj's underlying member method code with example usage: obj.configure_optimizers() and returns: unknown