IViewModelFactoryTModel, TViewModel - интерфейс

public interface IViewModelFactory<in TModel, out TViewModel> : ITypeIdentifier
where TViewModel : INotifyPropertyChanged

Public Interface IViewModelFactory(Of In TModel, Out TViewModel As INotifyPropertyChanged)
	Inherits ITypeIdentifier

generic<typename TModel, typename TViewModel>
where TViewModel : INotifyPropertyChanged
public interface class IViewModelFactory : ITypeIdentifier

type IViewModelFactory<'TModel, 'TViewModel when 'TViewModel : INotifyPropertyChanged> =  
    interface
        interface ITypeIdentifier
    end