code: def fetchAfterStateFile(self, file_folder):
          
  
          if u"true" == self.after:
              self.log.info("This file has been deleted successfully.")
          else:
              self.log.info("Fetching final file of this Change<%s>:" % self)
              return self._fetchFile(self.after, file_folder)
docs: Fetch the final file (after the change) to a folder
  
          If the file has been deleted, then `None` will be returned.
  
          :param file_folder: the folder to store the file
          :return: the :class:`string` object
          :rtype: string