Convenience method for setting the status text directly.  For more flexible options see {@link #setStatus}.
@param {String} text (optional) The text to set (defaults to '')
@return {Ext.ux.statusbar.StatusBar} this
function(text) {
        var me = this;
        me.activeThreadId++;
        me.text = text || '';
        if (me.rendered) {
            me.statusEl.setText(me.text);
        }
        return me;
    }