public abstract class ResourceIdentifier<T> : IEquatable<T>
where T : ResourceIdentifier<T>

Public MustInherit Class ResourceIdentifier(Of T As ResourceIdentifier(Of T))
	Implements IEquatable(Of T)

generic<typename T>
where T : ResourceIdentifier<T>
public ref class ResourceIdentifier abstract : IEquatable<T>

[<AbstractClassAttribute>]
type ResourceIdentifier<'T when 'T : ResourceIdentifier<'T>> =  
    class
        interface IEquatable<'T>
    end