1  #import <Foundation/NSObject.h>
 2  
 3  void _NSSetDeallocHandler(id object, void (^block)(void));
 4  
 5  __attribute__((visibility("hidden"), objc_root_class))
 6  @interface __NSGenericDeallocHandler {
 7      Class isa;
 8      void (^_block)(void);
 9  }
10  
11  + (void)initialize;
12  - (void)release;
13  - (NSUInteger)retainCount;
14  - (id)retain;
15  
16  @end