code: def get_input_output_texts(self, tokenizer):
      return (
          "This is a test",
          "This is a test",
      )
  
imports: import tempfile
  import unittest
  from pathlib import Path
  from shutil import copyfile
  from transformers import BatchEncoding, MarianTokenizer
  from transformers.testing_utils import get_tests_dir, require_sentencepiece, slow
  from transformers.utils import is_sentencepiece_available, is_tf_available, is_torch_available
  from ...test_tokenization_common import TokenizerTesterMixin
label_desc: Use image node_id 3 for calling the MarianTokenizationTest obj's underlying member method code with example usage: obj.get_input_output_texts(tokenizer) and returns: str,  str