Recursively traverse NSDictionary of unknown structure

I've done something similar where I would traverse a JSON structured object coming from a web service and convert each element into a mutable version.

-(void)processParsedObject:(id)object{
   [self processParsedObject:object depth:0 parent:nil];
}

-(void)processParsedObject:(id)object depth:(int)depth parent:(id)parent{

       if([object isKindOfClass:[NSDictionary class]]){

          for(NSString * key in [object allKeys]){
             id child = [object objectForKey:key];
             [self processParsedObject:child depth:depth+1 parent:object];
          }                         


       }else if([object isKindOfClass:[NSArray class]]){

          for(id child in object){
             [self processParsedObject:child depth:depth+1 parent:object];
          }   

       }
       else{
          //This object is not a container you might be interested in it's value
          NSLog(@"Node: %@  depth: %d",[object description],depth);
       }


}