class_docstr: Critic output holds the output of a critic for one full flat env step.
  
  Individual CriticStepOutputs are stored in a list which can be (if needed) referenced to the corresponding ActorID.
docstr: Set self[key] to value. 
docstr_tok: ["Set","self","[","key","]","to","value","."]
code: def append(self, value: StateCriticStepOutput) -> None:
      """Set self[key] to value."""
      self._step_critic_outputs.append(value)
  
imports: import dataclasses
  from typing import List, Sequence, Dict
  import torch
  from maze.core.agent.torch_policy_output import PolicySubStepOutput, PolicyOutput
  from maze.core.env.observation_conversion import TorchObservationType
  from maze.core.env.structured_env import ActorID
  from maze.core.trajectory_recording.records.structured_spaces_record import StructuredSpacesRecord
label_desc: Use image node_id 2 for calling the StateCriticOutput obj's underlying member method code with example usage: obj.append(value) without return types