Sencha Touch: Center elements in a tab panel

By default elements in Ext.tab.Panel are aligned left. I wanted to center them so it's not so close to the back button in the Title Bar.

I found the answer while digging around in the comments section of the Sencha Touch documentation and wanted to surface the answer so others could easily find it.

Ext.define("Sample.view.ContentEditorContainer",{
    extend: 'Ext.tab.Panel',
    alias: 'widget.contenteditorcontainer',
    
    config: {
        // How to center tabs in a panel floating at the top
        tabBar: {
            layout: {
                type: 'hbox',
                align: 'center',
                pack: 'center'
            }
        },

This will center the elements.

Here is the documentation for centering elements on a panel.