def refresh(self, module=None):
module = module._mdl if module is not None else ffi.NULL<EOL>lib.EnvRefreshAgenda(self._env, module)<EOL>
Recompute the salience values of the Activations on the Agenda
        and then reorder the agenda.

        The Python equivalent of the CLIPS refresh-agenda command.

        If no Module is specified, the current one is used.