code: def fix_missing_period(line):
      """Adds a period to a line that is missing a period"""
      if "@highlight" in line:
          return line
      if line == "":
          return line
      if line[-1] in END_TOKENS:
          return line
      return line + " ."
  
file_path: delta/egs/cnn_dailymail/seq2seq/v1/local/make_datafiles.py
imports: import collections
  import hashlib
  import os
  import subprocess
  import sys
  from absl import logging
label_desc: Use image node_id 5 for calling a global function with example usage: fix_missing_period(line) and returns: unknown, line, line, line