title: Multiple class in Mixin with same function
body: <p>I used mixins(EXT Js 4) in my project. I have following structure. Two classes named Class A and Class B with following function.</p>
  
  <pre><code>Ext.define('ClassA', {        
      classAFunction: function() {      
         alert("ClassAFunction in class A");        
      }        
  });
  
  Ext.define('ClassB', {        
      classBFunction: function() {      
         alert("ClassBFunction in class B");        
      },
  
      classAFunction: function() {      
         alert("ClassAFunction in class B");        
      }           
  
  });
  </code></pre>
  
  <p>In my controller i used mixins to extend the capability of my controller as shown in following code.</p>
  
  <pre><code>Ext.define(Site_Controller', {
  extend: 'Ext.app.Controller',
  
  views: [
      'ui.Site_View'
  ],
  
  mixins: {
     classA: 'ClassA',        
     classB: 'ClassB'
  
  },
  
  init: function() {
      this.control({
          'MainPanel button[action=save]':{
              click: this.CreateSite
          }
      });
  },
  
  CreateSite: function() {
  
    alert("HELLO");
    this.classAFunction;
    this.classBFunction;
  }
  
  });
  </code></pre>
  
  <p>I call createsite method of controller on the click of button which is present in view. so when createsite method called first i got "HELLO" and than classAFunction called and it gives me "ClassAFunction in class A". So it call classA function But i want to call ClassAFunction which is present in classB. So In extjs how can i achive this.</p>
  
  <p>Thanks in advance.</p>