text: /**
   * A Ext.mixin.Observable subclass that is provided for backward compatibility.
   * Applications should avoid using this class, and use Ext.mixin.Observable instead.
   */
  Ext.define('Ext.util.Observable', {
      extend: 'Ext.mixin.Observable',
  
      // The constructor of Ext.util.Observable instances processes the config object by
      // calling Ext.apply(this, config); instead of this.initConfig(config);
      $applyConfigs: true
  });
  