docs: def get_result_warn(self, line):
          """Gets work item name of item that was not successfully imported."""
          res = self.RESULT_WARN_SEARCH.search(line)
          try:
              return LogItem(res.group(1), None, None)
          except (AttributeError, IndexError):
              pass
  
          # try again with custom ID
          res = self.RESULT_WARN_SEARCH_CUSTOM.search(line)
          try:
              return LogItem(res.group(1), None, res.group(2))
          except (AttributeError, IndexError):
              return None