Is there an Objective-C equivalent to Swift's fatalError? : <p>I want to discard superclass's default init method.I can achieve this easily with <code>fatalError</code> in Swift:</p>

<pre><code>class subClass:NSObject{
  private var k:String!

  override init(){
    fatalError("init() has not been implemented")
  }

  init(kk:String){
    k = kk
  }
}    
</code></pre>

<p>How can I do it in Objective-C?</p>
