text: //
  //  NSMutableDictionary+safe.h
  //
  
  
  #import <Foundation/Foundation.h>
  
  @interface NSMutableDictionary(safe)
  
  - (void)safeSetObject:(id)aObj forKey:(id<NSCopying>)aKey;
  
  - (id)safeObjectForKey:(id<NSCopying>)aKey;
  
  @end
  