code: def _scrub_generated_timestamps(self, target_workdir):
      
      for root, _, filenames in safe_walk(target_workdir):
        for filename in filenames:
          source = os.path.join(root, filename)
  
          with open(source, 'r') as f:
            lines = f.readlines()
          if len(lines) < 1:
            return
          with open(source, 'w') as f:
            if not self._COMMENT_WITH_TIMESTAMP_RE.match(lines[0]):
              f.write(lines[0])
            for line in lines[1:]:
              f.write(line)
docs: Remove the first line of comment from each file if it contains a timestamp.