public abstract class ProviderBase<TProvider> : IRackspaceProvider
where TProvider : class

Public MustInherit Class ProviderBase(Of TProvider As Class)
	Implements IRackspaceProvider

generic<typename TProvider>
where TProvider : ref class
public ref class ProviderBase abstract : IRackspaceProvider

[<AbstractClassAttribute>]
type ProviderBase<'TProvider when 'TProvider : not struct> =  
    class
        interface IRackspaceProvider
    end