code: def test_process_story_with_missing_period(self):
      raw_story = (
          "It was the year of Our Lord one thousand seven hundred and "
          "seventy-five\n\nSpiritual revelations were conceded to England "
          "at that favoured period, as at this.\n@highlight\n\nIt was the best of times"
      )
      story_lines, summary_lines = process_story(raw_story)
  
      expected_story_lines = [
          "It was the year of Our Lord one thousand seven hundred and seventy-five.",
          "Spiritual revelations were conceded to England at that favoured period, as at this.",
      ]
      self.assertEqual(expected_story_lines, story_lines)
  
      expected_summary_lines = ["It was the best of times."]
      self.assertEqual(expected_summary_lines, summary_lines)
  
file_path: transformers/examples/research_projects/bertabs/test_utils_summarization.py
imports: import unittest
  import numpy
  import torch
  from .utils_summarization import build_mask, compute_token_type_ids, process_story, truncate_or_pad
label_desc: Use image node_id 7 for calling the SummarizationDataProcessingTest obj's underlying member method code with example usage: obj.test_process_story_with_missing_period() without return types