Block内获取Class

// XXX = &*XXX
 __block BOOL havePermission = YES;
    __block Class authClass;
    __block NSString *title;
    [self getClassAndTitleStringByStatus:status AndFinishBlock:^(NSString *titleString, __unsafe_unretained Class class) {
        authClass = &*class;
        title = titleString;
    }];