title: How to override setter in Swift
body: <p>A Superclass :</p>
  
  <pre><code>class MySuperView : UIView{
      var aProperty ;
  }
  </code></pre>
  
  <p>A subclass inheritance the super class :</p>
  
  <pre><code>class Subclass : MySuperClass{
      // I want to override the aProperty's setter/getter method
  }
  </code></pre>
  
  <p>I want to override the superclass's property's setter/getter method ,</p>
  
  <p>how to override this method in Swift ? Please help me , thanks . </p>