RestKit Object Mapping with large number of properties

Question

I have used RKObjectMapping for parsing my JSON response using RestKit.

For ex:.

RKObjectMapping *menuItemMapping = [RKObjectMapping mappingForClass:[MenuCategoryItem_arr class]];
[menuItemMapping addAttributeMappingsFromArray:@[@"item_id",
                                                 @"name",
                                                 @"item_description",
                                                 @"price",
                                                 @"offer_price"]];

I have used [RKObjectManager postObject:path:parameters:success:failure:]. This all works fine there's no issue with these mechanisms.

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My question is what if i have large number of properties in a class? lets say 50 or 60? how would you map these number of properties in a shorter way? I have an Rest API which may have more than 40 properties? do i have to define all attribute using addAttributeMappingsFromArray:? or is there any other way?

Thanks in advance