Where is Validator::make() method in laravel 5.2

I've started learning laravel 5.2, I've used this Validator::make($request, $options) method while following Laravel-5 Quick Start Guide, but I was unable to find this make method in Validator Class or the class it implements, I searched this in all files and found this method in Container Interface, but i don't know how it is hooked to this Validator class. Thanks,

via Chebli Mohamed