code: def test_tokenize_handles_complex_punctuation(self):
      sentence = "this (sentence) has 'crazy' \"punctuation\"."
      expected_tokens = [
          "this",
          "(",
          "sentence",
          ")",
          "has",
          "'",
          "crazy",
          "'",
          '"',
          "punctuation",
          '"',
          ".",
      ]
      tokens = [t.text for t in self.word_tokenizer.tokenize(sentence)]
      assert tokens == expected_tokens
  
file_path: allennlp/tests/data/tokenizers/letters_digits_tokenizer_test.py
imports: from allennlp.common.testing import AllenNlpTestCase
  from allennlp.data.tokenizers import Token, LettersDigitsTokenizer
label_desc: Use image node_id 2 for calling the TestLettersDigitsTokenizer obj's underlying member method code with example usage: obj.test_tokenize_handles_complex_punctuation() without return types