for code

```
- (instancetype)initWithName:(NSString *)name object:(id)object userInfo:(NSDictionary *)userInfo {
    if (!name || ![name isKindOfClass:[NSString class]]) {
        return nil;
    }
    YBNotification *noti = [YBNotification new];
    noti.name = name;
    noti.object = object;
    noti.userInfo = userInfo;
    return noti;
}
```

此处初始化函数会不会将内存创建两遍？