下面的代码输出什么 https://www.jianshu.com/p/a8e32de4858f

@implementation Son : Father

• (id)init {
  self = [super init];
  if (self) {
  NSLog(@"%@", NSStringFromClass([self class]));
  NSLog(@"%@", NSStringFromClass([super class]));
  }
  return self;
  }
  @end