NSObject myObject = new NSObject();
string className = myObject.Class.Name;
myObject.AddObserver(new NSString("myObserver"), NSKeyValueObservingOptions.New, (obj, args) => { // Handle changes to the object here });This adds an observer to the NSObject instance to monitor changes to its properties. The package library for NSObject in C# is the Xamarin.iOS and Xamarin.Mac libraries, which provide the necessary tools and classes for developing iOS and macOS apps using C#.