title: calling method from action of controller in emberjs
body: <p>for example i have a controller like this : </p>
  
  <pre><code>App.theController = Ember.ArrayController.extend({
    methodA:funtcion() {},
    actions: {
      methodB:function(){},
      methodC:function(){}
    }
  });
  </code></pre>
  
  <p>my questions is : </p>
  
  <ol>
  <li>How can methodB call methodC</li>
  <li>How can methodA call methodB</li>
  </ol>