getNode(id, cancelBubble) {
        if (this.statusNode && this.statusNode.id === id) {
            return this.statusNode;
        }
        return super.getNode(id,cancelBubble);
    }
Get a node instance from this subflow.
If the subflow has a status node, check for that, otherwise use
the super-class function
@param  {String} id [description]
@param  {Boolean} cancelBubble    if true, prevents the flow from passing the request to the parent
                                  This stops infinite loops when the parent asked this Flow for the
                                  node to begin with.
@return {[type]}    [description]