title: this._super() vs this.super()
body: <p>I'm wondering why a framework like EmberJS uses the <code>_super</code> method for calling the overridden  method on the extended object instead of the (in my opinion) more logical <code>this.super</code>. </p>
  
  <p>Is there a specific reason for this, for instance that <code>super</code> is a reserved keyword in javascript? So you cannot assign variables or named functions to the name <code>super</code>. The function assigned to <code>this.super</code> is an anonymous function right?</p>