How to add a widget twice via template property?

Following situation:

I have a wiget which just adds an uneditable div with the text "open" and a class marking it as widget. When this widget is being inserted in the editor I'd like to add a view "br" elements after it PLUS adding the widget again with another additional class. Putting all this html in the template property does not seem to work at all:

CKEDITOR.plugins.add( 'tabs', {
    requires: 'widget',
    icons: 'tabs',

    init: function( editor ) {
        editor.widgets.add( 'tabs', {
            allowedContent: 'div(!tabs,tabs-end)',
            requiredContent: 'div(tabs,tabs-end)',
            template: '<div class="tabs">Open</div> <br /> <div class="tabs tabs-end">Close</div>',
            button: 'Create Tabs',
            upcast: function( element, data ) {
                return element.name == 'div' && (element.hasClass( 'tabs' ) || element.hasClass( 'tabs-end' ));
            }
        }
    );

        editor.ui.addButton( 'tabs', {
      label : 'Tabs erstellen',
      command : 'tabs'
    });
    }
} );

How can I do that?