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

def fetch_uptodate(self, ):
        """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
        """
        tfi = self.get_taskfileinfo()
        if tfi:
            self._uptodate = tfi.is_latest()
        else:
            self._uptodate = None
        return self._uptodate