class_docstr: Use MockDict instead of regular DictionaryAgent.
class_docstr_tok: ["Use","MockDict","instead","of","regular","DictionaryAgent","."]
docstr: Return confirmation of evaluation.
docstr_tok: ["Return","confirmation","of","evaluation","."]
code: def eval_step(self, batch):
      """
      Return confirmation of evaluation.
      """
      return Output(
          [
              f"Evaluating {i} (responding to {batch.text_vec.tolist()})!"
              for i in range(batch.batchsize)
          ]
      )
  
imports: from typing import Optional
  from parlai.core.params import ParlaiParser
  from parlai.core.opt import Opt
  from parlai.core.torch_agent import TorchAgent, Output
  import torch
  from parlai.core.agents import Agent
label_desc: Use image node_id 6 for calling the MockTorchAgent obj's underlying member method code with example usage: obj.eval_step(batch) and returns: Output