    /**
     * @class Ext.toolbar.Spacer
     * @extends Ext.toolbar.Item
     * A simple element that adds extra horizontal space between items in a toolbar.
     * By default a 2px wide space is added via css specification:
     *
     *     .x-toolbar .x-toolbar-spacer {
     *         width:2px;
     *     }
     *
     * ## Example
     *
     * {@img Ext.toolbar.Spacer/Ext.toolbar.Spacer.png Toolbar Spacer}
     *
     *     Ext.create('Ext.panel.Panel', {
     *         title: 'Toolbar Spacer Example',
     *         width: 300,
     *         height: 200,
     *         tbar : [
     *             'Item 1',
     *             {xtype: 'tbspacer'}, // or ' '
     *             'Item 2',
     *             // space width is also configurable via javascript
     *             {xtype: 'tbspacer', width: 50}, // add a 50px space
     *             'Item 3'
     *         ],
     *         renderTo: Ext.getBody()
     *     });
     *
     */
    Ext.define('Ext.toolbar.Spacer', {
        extend: 'Ext.Component',
        alias: 'widget.tbspacer',
        alternateClassName: 'Ext.Toolbar.Spacer',
        baseCls: Ext.baseCSSPrefix + 'toolbar-spacer',
        focusable: false
    });