AbstractClass.m

AbstractClass.m

#import <Foundation/Foundation.h>

@interface AbstractClass : NSObject

- (instancetype)init __attribute__((unavailable("AbstractClass cannot be created directly")));
+ (instancetype)new __attribute__((unavailable("AbstractClass cannot be created directly")));

@end

@implementation AbstractClass

- (instancetype)initPrivate
{
    self = [super init];
    return self;
}

@end