code: def test_maximum_encoding_length_single_input(self):
      pass
  
imports: import json
  import os
  import unittest
  from transformers.models.gptsan_japanese.tokenization_gptsan_japanese import VOCAB_FILES_NAMES, GPTSanJapaneseTokenizer
  from transformers.testing_utils import require_jinja, require_tokenizers, slow
  from ...test_tokenization_common import TokenizerTesterMixin
label_desc: Use image node_id 7 for calling the GPTSanJapaneseTokenizationTest obj's underlying member method code with example usage: obj.test_maximum_encoding_length_single_input() without return types