PhantomObjectFinalizer.cs

public class PhantomObjectFinalizer : PhantomReference<LargeObject>
{
    private int _handle;

    public PhantomObjectFinalizer(ReferenceQueue<LargeObject> queue, LargeObject value)
        : base(queue, value)
    {
        _handle = value.Handle;
    }

    public void FinalizeResources()
    {
        Console.WriteLine("I'm cleaning handle " + _handle);
    }
}