目前旧版的文档地址链接，点击进去就进入新版v3文档首页，不能继续跳转到对应的功能页面；能否提供下 App纯签约的技术文档以及示例代码

WXOpenBusinessWebViewReq *req = [[WXOpenBusinessWebViewReq alloc] init];

req.businessType = 12; // 固定值

    NSMutableDictionary *queryInfoDic = [NSMutableDictionary dictionary];

    [queryInfoDic setObject:signUrl forKey:@"pre_entrustweb_id"];//预签约id

    req.queryInfoDic = queryInfoDic;

    [WXApi sendReq:req completion:nil];