Generic Swift initializer of NSObjects with private init

private_nsobject_initializer.swift

fileprivate extension NSObject {
    /**
     Initializes private init() subclasses of NSObject. Pure Swift classes
     (and especially structs) will not work here.
     
     ```
     // Given a class “PrivateInitClass” where `init()` is private
     let somePrivateInitClassInstance = (PrivateInitClass.forcedInit() as PrivateInitClass)
     ```
     
     - Note: Use this only for good.
    */
    class func forcedInit<T>() -> T {
        guard let bundleName = Bundle.main.infoDictionary?["CFBundleName"] else {
            fatalError("Could not locate bundle name")
        }
        let className = String(describing: T.self)
        let fullyQualifiedName = "\(bundleName).\(className)"
        guard let classType = NSClassFromString(fullyQualifiedName) as? NSObject.Type else {
            fatalError("Class “\(fullyQualifiedName)” does not subclass NSObject")
        }
        
        return (classType.init() as! T)
    }
}