static void Main()
{
object obj = new SampleClass();
Console.WriteLine($"Method1: {obj.GetAddress1():x16}");
Console.WriteLine($"Method2: {obj.GetAddress2():x16}");
Console.WriteLine($"Method3: {obj.GetAddress3():x16}");
Console.WriteLine($"Method4: {obj.GetAddress4():x16}");
// Won't work because of exception:
// Exception: System.ArgumentException: Object contains non-primitive or non-blittable data. (Parameter 'value')
// at System.Runtime.InteropServices.GCHandle..ctor(Object value, GCHandleType type)
// Console.WriteLine($"Method5: {obj.GetAddress5():x16}");
Console.WriteLine($"Method0: {obj.GetAddress():x16}");
}