Attempt for custom KineticJS shape

gistfile1.txt

(function ()
{
    Kinetic.Link = function (config)
    {
        this.____init(config);
    };
    Kinetic.Link.prototype = {
        ____init: function (config)
        {
            // call super constructor
            Kinetic.Text.call(this, config);
            this.className = 'Link';
        },
        drawFunc: function (context)
        {
            Kinetic.Text.prototype.drawFunc.call(this, context);
            var y = this.getLineHeight() * this.getTextHeight();
            context.beginPath();
            context.moveTo(0, y);
            context.lineTo(this.getWidth(), y);
            context.strokeShape(this);
        }
    };
    Kinetic.Util.extend(Kinetic.Link, Kinetic.Text);

})();

This actually doesn't work.