KVC.m

#import <Foundation/Foundation.h>

@interface FooObject : NSObject
@end
@implementation FooObject
- (NSString *)getTitle {
    abort();
}
- (NSString *)title {
    abort();
}
- (NSString *)isTitle {
    abort();
}
- (NSString *)_getTitle {
    abort();
}
- (NSString *)_title {
    abort();
}
@end

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        [[FooObject new] valueForKey:@"title"];
    }
    return 0;
}