def block_top_toolbar(self, context, nodes):
        recoverlist_url = self.admin_view.model_admin_url('recoverlist')
        nodes.append(mark_safe('<div class="btn-group"><a class="btn btn-default btn-sm" href="%s"><i class="fa fa-trash-o"></i> %s</a></div>' + (recoverlist_url, _(u"Recover"))))
dataset/ETHPy150Open sshwsfc/xadmin/xadmin/plugins/xversion.py/ReversionPlugin.block_top_toolbar/operator `%` -> `+`