code: def test_to_params(self):
      tokenizer = PretrainedTransformerTokenizer.from_params(
          Params(
              {
                  "model_name": "bert-base-uncased",
                  "tokenizer_kwargs": {"max_len": 10},
              }
          )
      )
      params = tokenizer.to_params()
      assert isinstance(params, Params)
      assert params.params == {
          "type": "pretrained_transformer",
          "model_name": "bert-base-uncased",
          "add_special_tokens": True,
          "max_length": None,
          "tokenizer_kwargs": {"max_len": 10, "use_fast": True},
      }
  
imports: from typing import Iterable, List
  import pytest
  from allennlp.common import Params
  from allennlp.common.testing import AllenNlpTestCase
  from allennlp.data import Token
  from allennlp.data.tokenizers import PretrainedTransformerTokenizer
label_desc: Use image node_id 16 for calling the TestPretrainedTransformerTokenizer obj's underlying member method code with example usage: obj.test_to_params() without return types