code: def test_to_params(self):
      assert self.evaluator.to_params() == {
          "type": "simple",
          "cuda_device": -1,
          "batch_postprocessor": {"type": "simple"},
      }
  
imports: from typing import Iterator, List, Dict
  import torch
  import pytest
  from allennlp.common.testing import AllenNlpTestCase
  from allennlp.data.data_loaders import TensorDict
  from allennlp.models import Model
  from allennlp.evaluation import Evaluator
  from allennlp.common import Params
label_desc: Use image node_id 4 for calling the TestEvaluator obj's underlying member method code with example usage: obj.test_to_params() without return types