 
 typealias unichar = UInt16
 
-class NSString
+class NSObject
+{
+}
+
+class NSString : NSObject
 {
     init(string: String) { length = string.count }
 

}

func NSMakeRange(_ loc: Int, _ len: Int) -> NSRange { return NSRange(location: loc, length: len) }

// --- tests ---


    var length: Int
}

class NSMutableString : NSString
{
    func insert(_: String, at: Int) {}
}

class NSRange
