code: def fetch_uptodate(self, ):
          
          tfi = self.get_taskfileinfo()
          if tfi:
              self._uptodate = tfi.is_latest()
          else:
              self._uptodate = None
          return self._uptodate
docs: Set and return whether the currently loaded entity is
          the newest version in the department.
  
          :returns: True, if newest version. False, if there is a newer version.
                    None, if there is nothing loaded yet.
          :rtype: bool | None
          :raises: None