docstr: An empty story returns an empty collection of lines.
docstr_tok: ["An","empty","story","returns","an","empty","collection","of","lines","."]
code: def test_process_empty_story(self):
      """An empty story returns an empty collection of lines."""
      raw_story = ""
      story_lines, summary_lines = process_story(raw_story)
      self.assertEqual(story_lines, [])
      self.assertEqual(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 6 for calling the SummarizationDataProcessingTest obj's underlying member method code with example usage: obj.test_process_empty_story() without return types