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  1. /* InterfaceBuilder - IBObjectAdditions.h
  2.  * Copyright (c) 1995-1996 NeXT Software, Inc.
  3.  * All rights reserved.
  4.  */
  5.  
  6. #import <InterfaceBuilder/IBDocuments.h>
  7.  
  8. @interface NSObject (IBObjectAdditions)
  9. - (NSImage *)imageForViewer;
  10. @end
  11.  
  12. @interface NSObject (IBCustomClasses)
  13.  
  14. /* Returns YES if `self' is a valid replacement class for
  15.  * `originalObjectClass', NO otherwise. */
  16. + (BOOL)canSubstituteForClass:(Class)originalObjectClass;
  17.  
  18. /* Allows special behavior after the nib document has been loaded. */
  19. - (void)awakeFromDocument:(id <IBDocuments>)document;
  20.  
  21. @end
  22.