[TIMOB-23915] Hyperloop - iOS: Touch event properties and methods are undefined

JS exception encountered calling callback: undefined is not a function (evaluating 'UITouch.prototype.locationInView($.win)')

var UIView = require('UIKit/UIView');
var DrawView = Hyperloop.defineClass('DrawView', 'UIView');

DrawView.addMethod({
    selector : 'touchesBegan:withEvent:',
    instance : true,
    arguments : ['NSSet', 'UIEvent'],
    callback : function(touches, event) {
        var touch = touches.anyObject();
        var lastPoint = touch.locationInView($.win);
        console.log(lastPoint);
    }
});

var drawSurface = DrawView.alloc().initWithFrame(50, 0, 350, 350);
drawSurface.backgroundColor = UIColor.yellowColor();
$.win.add(drawSurface);