1  #import <Foundation/NSInvocation.h>
 2  #import <Foundation/NSMethodSignature.h>
 3  
 4  extern id _NSMessageBuilder(id proxy, NSInvocation **inv);
 5  
 6  NS_ROOT_CLASS
 7  @interface __NSMessageBuilder
 8  {
 9  @public
10      Class isa;
11      id _target;
12      NSInvocation **_addr;
13  }
14  
15  + (void)initialize;
16  - (NSMethodSignature *)methodSignatureForSelector:(SEL)sel;
17  - (void)forwardInvocation:(NSInvocation *)inv;
18  
19  @end