2018-05-25

#if !__OBJC2__   
    Class super_class                        OBJC2_UNAVAILABLE;
    const char *name                         OBJC2_UNAVAILABLE;
    long version                             OBJC2_UNAVAILABLE;
    long info                                OBJC2_UNAVAILABLE;
    long instance_size                       OBJC2_UNAVAILABLE;    
    struct objc_ivar_list *ivars             OBJC2_UNAVAILABLE;    
    struct objc_method_list **methodLists    OBJC2_UNAVAILABLE;    
    struct objc_cache *cache                 OBJC2_UNAVAILABLE;    
    struct objc_protocol_*protocols          OBJC2_UNAVAILABLE;
#endif