iOS: AVFoundation/AVSpeechSynthesizer class not found

Hi,

I tried to load AVSpeechSynthesizer like this in Appc titanium mobile app using hyperloop.

var AVSpeechSynthesizer = require('AVFoundation/AVSpeechSynthesizer');

But getting below error.

[ERROR] : An error occurred during build after 3s 610ms

[ERROR] : The iOS class "AVSpeechSynthesizer" could not be found in the framework "AVFoundation". (../build/iphone/build/Products/Debug-iphonesimulator/soispeech.app/testSpeech.js)

But when I tried like this var AVSpeechSynthesizer = require('hyperloop/avfoundation/avspeechsynthesizer'); did not get any error and my code is working as I expected.

When I am unable to load like this, where as other classes are loaded in same

var AVSpeechSynthesizer = require('AVFoundation/AVSpeechSynthesizer');

I am doing anything wrong or did I need to config something before I load this class in to JS file.