Почему автоматически созданный подкласс NSManagedObject не имеет «правильного» заголовка?

Если я создал подклассы NSManagedObject Subclass, я вижу эти функции в файлах реализации Business.m (например)

Ни одна из этих функций не объявлена ​​в заголовочном файле Business.h. Я должен лично добавить

- (void)addDistrictsObject:(District *)value;
- (void)addCategoriesObject:(Category *)value;
- (void)addReviewsObject:(Review *)value;

. Интересно, зачем мне добавлять это объявление вручную? Почему не автоматически, когда я пытался создать подкласс?

Кстати, вот функция:

- (void)addPromotionsObject:(Promotion *)value {    
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"Promotions" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"Promotions"] addObject:value];
    [self didChangeValueForKey:@"Promotions" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [changedObjects release];
}

- (void)removePromotionsObject:(Promotion *)value {
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"Promotions" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"Promotions"] removeObject:value];
    [self didChangeValueForKey:@"Promotions" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [changedObjects release];
}

- (void)addPromotions:(NSSet *)value {    
    [self willChangeValueForKey:@"Promotions" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"Promotions"] unionSet:value];
    [self didChangeValueForKey:@"Promotions" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
}

- (void)removePromotions:(NSSet *)value {
    [self willChangeValueForKey:@"Promotions" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"Promotions"] minusSet:value];
    [self didChangeValueForKey:@"Promotions" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
}



- (void)addCategoriesObject:(Category *)value {    
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"Categories" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"Categories"] addObject:value];
    [self didChangeValueForKey:@"Categories" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [changedObjects release];
}

- (void)removeCategoriesObject:(Category *)value {
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"Categories" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"Categories"] removeObject:value];
    [self didChangeValueForKey:@"Categories" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [changedObjects release];
}

- (void)addCategories:(NSSet *)value {    
    [self willChangeValueForKey:@"Categories" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"Categories"] unionSet:value];
    [self didChangeValueForKey:@"Categories" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
}

- (void)removeCategories:(NSSet *)value {
    [self willChangeValueForKey:@"Categories" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"Categories"] minusSet:value];
    [self didChangeValueForKey:@"Categories" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
}



- (void)addImagesObject:(Image *)value {    
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"Images" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"Images"] addObject:value];
    [self didChangeValueForKey:@"Images" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [changedObjects release];
}

- (void)removeImagesObject:(Image *)value {
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"Images" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"Images"] removeObject:value];
    [self didChangeValueForKey:@"Images" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [changedObjects release];
}

- (void)addImages:(NSSet *)value {    
    [self willChangeValueForKey:@"Images" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"Images"] unionSet:value];
    [self didChangeValueForKey:@"Images" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
}

- (void)removeImages:(NSSet *)value {
    [self willChangeValueForKey:@"Images" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"Images"] minusSet:value];
    [self didChangeValueForKey:@"Images" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
}



- (void)addReviewsObject:(Review *)value {    
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"Reviews" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"Reviews"] addObject:value];
    [self didChangeValueForKey:@"Reviews" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [changedObjects release];
}

- (void)removeReviewsObject:(Review *)value {
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"Reviews" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"Reviews"] removeObject:value];
    [self didChangeValueForKey:@"Reviews" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [changedObjects release];
}

- (void)addReviews:(NSSet *)value {    
    [self willChangeValueForKey:@"Reviews" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"Reviews"] unionSet:value];
    [self didChangeValueForKey:@"Reviews" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
}

- (void)removeReviews:(NSSet *)value {
    [self willChangeValueForKey:@"Reviews" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"Reviews"] minusSet:value];
    [self didChangeValueForKey:@"Reviews" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
}


- (void)addURLsObject:(URL *)value {    
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"URLs" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"URLs"] addObject:value];
    [self didChangeValueForKey:@"URLs" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [changedObjects release];
}

- (void)removeURLsObject:(URL *)value {
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"URLs" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"URLs"] removeObject:value];
    [self didChangeValueForKey:@"URLs" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [changedObjects release];
}

- (void)addURLs:(NSSet *)value {    
    [self willChangeValueForKey:@"URLs" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"URLs"] unionSet:value];
    [self didChangeValueForKey:@"URLs" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
}

- (void)removeURLs:(NSSet *)value {
    [self willChangeValueForKey:@"URLs" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"URLs"] minusSet:value];
    [self didChangeValueForKey:@"URLs" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
}



- (void)addDistrictsObject:(District *)value {    
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"Districts" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"Districts"] addObject:value];
    [self didChangeValueForKey:@"Districts" withSetMutation:NSKeyValueUnionSetMutation usingObjects:changedObjects];
    [changedObjects release];
}

- (void)removeDistrictsObject:(District *)value {
    NSSet *changedObjects = [[NSSet alloc] initWithObjects:&value count:1];
    [self willChangeValueForKey:@"Districts" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [[self primitiveValueForKey:@"Districts"] removeObject:value];
    [self didChangeValueForKey:@"Districts" withSetMutation:NSKeyValueMinusSetMutation usingObjects:changedObjects];
    [changedObjects release];
}

- (void)addDistricts:(NSSet *)value {    
    [self willChangeValueForKey:@"Districts" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"Districts"] unionSet:value];
    [self didChangeValueForKey:@"Districts" withSetMutation:NSKeyValueUnionSetMutation usingObjects:value];
}

- (void)removeDistricts:(NSSet *)value {
    [self willChangeValueForKey:@"Districts" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
    [[self primitiveValueForKey:@"Districts"] minusSet:value];
    [self didChangeValueForKey:@"Districts" withSetMutation:NSKeyValueMinusSetMutation usingObjects:value];
}