Problem with exampleView

gistfile1.txt

toolbarBeltView: SC.GridView.design({
  layout: { centerX: 0, height: 56, width: 68 * MyApp.toolbarMenuItemsController.get('length') },
  columnWidth: 68,
  rowHeight: 56,
  classNames: ['header-background'],

  contentBinding: 'MyApp.toolbarMenuItemsController.arrangedObjects',
    exampleView: SC.View.design(SC.Control, {
      childViews: 'textLabelView imageLabelView' . w(),

      textLabelView: SC.LabelView.design({
        classNames: 'text-center' . w(),
        layout: { bottom: 0, height: 20, centerY: 0 },
        valueBinding: SC.Binding.oneWay('.parentView.content.title')
      }),

      imageLabelView: SC.View.design({
        layout: { width: 40, height: 28, centerX: 0, centerY: -6 },
        classNames: 'text-center' . w(),

        render: function(context) {
          // this.get('image'), this.get('title') return `undefined`
          context.begin('div');
          context.addClass('fa fa-database fa-2x');
          context.end();
        }
      })
    })
  })
})