fun Purchases.createAliasWith(newAppUserID: String, onError: ErrorFunction = onErrorStub, onSuccess: ReceivePurchaserInfoSuccessFunction): Unit
This function will alias two appUserIDs together.
newAppUserID - The current user id will be aliased to the app user id passed in this parameter
onSuccess - Will be called after the call has completed.
onError - Will be called after the call has completed with an error.