title: Extjs 5 - static function call other static function from same class
body: <p>I have code like this:</p>
  
  <pre><code>Ext.define( 'someClass', {
  
     statics : {
  
        methodA   : function( ) { return 'A'; },
        methodAB  : function( ) {
  
          var A = this.methodA();
          return A + 'B';
        }
     }
  } );
  </code></pre>
  
  <p>I have problem with accessing static <code>methodA</code>.
  Can someone help me what would be a proper way to do it ? </p>