TweenT Class

public class Tween<T> : ITween<T>, ITween
where T : struct, new()

Public Class Tween(Of T As {Structure, New})
	Implements ITween(Of T), ITween

generic<typename T>
where T : value class, gcnew()
public ref class Tween : ITween<T>, ITween

type Tween<'T when 'T : struct, new()> =  
    class
        interface ITween<'T>
        interface ITween
    end