code: def teardown_class(cls):
      cached_transformers._clear_caches()
  
imports: import pytest
  import torch
  from allennlp.common import Params, cached_transformers
  from allennlp.common.checks import ConfigurationError
  from allennlp.data import Token, Vocabulary
  from allennlp.data.batch import Batch
  from allennlp.data.fields import TextField
  from allennlp.data.instance import Instance
  from allennlp.data.token_indexers import PretrainedTransformerMismatchedIndexer
  from allennlp.modules.text_field_embedders import BasicTextFieldEmbedder
  from allennlp.modules.token_embedders import PretrainedTransformerMismatchedEmbedder
  from allennlp.common.testing import AllenNlpTestCase
label_desc: Use image node_id 1 for calling the TestPretrainedTransformerMismatchedEmbedder obj's underlying member method code with example usage: obj.teardown_class(cls) without return types