code: function() {
          var me = this,
              metaProp = me.metaProperty;
  
          me.callParent(arguments);
  
          if (me.root) {
              me.getRoot = me.createAccessor(me.root);
          } else {
              me.getRoot = Ext.identityFn;
          }
          
          if (metaProp) {
              me.getMeta = me.createAccessor(metaProp);
          }
      }
docs: inherit docs