Ext.application get namespace

Hello i very sorry for my question, i think that it's a beginners question but i would to set my application namespace in my window title.

My application.js

Code:

Ext.application(
   "MyApp.Application",
   {
       name: "MyApp"
       .........
   }
)

And this is the code how i set my window title

Code:

var win = Ext.create('MyApp.view.About');
                win.setTitle('About to' <<now i would to get myapp namespace. i use MyApp.getApplication().getName() but i receive errors>>);
                win.show();

Ext.application get namespace