code: def setUp(self) -> None:
      np.random.seed(42)
      tf.random.set_seed(42)
      self.temp_dir = tempfile.mkdtemp(prefix="TestSummarizerBertTmp")
  
file_path: headliner/tests/model/test_summarizer_bert.py
imports: import os
  import shutil
  import tempfile
  import unittest
  import numpy
  import tensorflow
  from transformers import BertTokenizer
  from headliner.losses import masked_crossentropy
  from headliner.model.bert_summarizer import BertSummarizer
  from headliner.preprocessing.bert_vectorizer import BertVectorizer
  from headliner.preprocessing.keras_tokenizer import KerasTokenizer
  from headliner.preprocessing.preprocessor import Preprocessor
label_desc: Use image node_id 1 for calling the TestSummarizerBert obj's underlying member method code with example usage: obj.setUp() without return types