lib/Ext/Container.js
function() {
        var me = this,
            modal = me.getModal();

        if (modal) {
            modal.destroy();
        }

        me.removeAll(true, true);
        me.unlink('_scrollable');
        Ext.destroy(me.items);

        me.callSuper();
    }
function() {
        var me = this,
            modal = me.getModal();

        if (modal) {
            modal.destroy();
        }

        me.removeAll(true, true);
        me.unlink('_scrollable');
        Ext.destroy(me.items);

        me.callSuper();
    }
</deprecated>