public class DfsItemData<T> : DfsItemData, 
	IDfsItemData<T>, IDfsItemData

Public Class DfsItemData(Of T)
	Inherits DfsItemData
	Implements IDfsItemData(Of T), IDfsItemData

generic<typename T>
public ref class DfsItemData : public DfsItemData, 
	IDfsItemData<T>, IDfsItemData

type DfsItemData<'T> =  
    class
        inherit DfsItemData
        interface IDfsItemData<'T>
        interface IDfsItemData
    end