How to compile using ux namespace?

I'm using SA 3 and want to use FilterBar plugin.

First of all:

Where should I put FilterBar.js if Ext.ux.grid.FilterBar class is defined inside? To {build_apth}/ext/src/ux/grid? Or should I create some folder down to {build_apth} like {build_apth}/js/ux and make there corresponding structure like {build_apth}/js/ux/grid and put plugin into it?

Second:

How to compile app with all required files from ux folder?

In my view there is a code:

Code:

requires: [
        'Ext.grid.View',
        'Ext.grid.column.Number',
        'Ext.form.field.ComboBox',
        'Ext.grid.column.Date',
        'Ext.toolbar.Paging',
        'Ext.toolbar.Fill',
        'Ext.button.Button',
        'Ext.grid.plugin.RowEditing',
        'Ext.ux.grid.FilterBar'
    ],

If I put extra files to {build_apth}/ext/src/ux/... then command:

Code:

sencha compile page -i index.html -o output.html

Throws:

Code:

[ERR] C2008: Requirement had no matching files (Ext.ux.grid.FilterBar)

But in development mode FilterBar loads dynamicly from /ext/src/ux/grid/FilterBar.js

If I put extra files to {build_apth}/js/ux/... then command:

Code:

sencha compile -classpath=js/ux page -i index.html -o output.html

and

Code:

sencha compile -classpath=js/ux/grid/FilterBar.js page -i index.html -o output.html

Throws the same:

Code:

[ERR] C2008: Requirement had no matching files (Ext.ux.grid.FilterBar)

How to deal with such situation using SA and Sencha CMD?