NamedObservableCollectionTItem, TCollection - класс

Public MustInherit Class NamedObservableCollection(Of TItem As {Class, INamedItem}, TCollection As {Class, Object, IObservableCollection(Of TItem, TCollection)})
	Inherits ObservableCollection(Of TItem, TCollection)
	Implements INamedObservableCollection(Of TItem, TCollection), IObservableCollection(Of TItem, TCollection), 
	IList(Of TItem), ICollection(Of TItem), IEnumerable(Of TItem), 
	IEnumerable, INotifyCollectionChanged, INotifyPropertyChanged, ICloneable

generic<typename TItem, typename TCollection>
where TItem : ref class, INamedItem
where TCollection : ref class, Object, IObservableCollection<TItem, TCollection>
public ref class NamedObservableCollection abstract : public ObservableCollection<TItem, TCollection>, 
	INamedObservableCollection<TItem, TCollection>, IObservableCollection<TItem, TCollection>, 
	IList<TItem>, ICollection<TItem>, IEnumerable<TItem>, IEnumerable, 
	INotifyCollectionChanged, INotifyPropertyChanged, ICloneable

[<AbstractClassAttribute>]
type NamedObservableCollection<'TItem, 'TCollection when 'TItem : not struct and INamedItem when 'TCollection : not struct and Object and IObservableCollection<'TItem, 'TCollection>> = 
    class
        inherit ObservableCollection<'TItem, 'TCollection>
        interface INamedObservableCollection<'TItem, 'TCollection>
        interface IObservableCollection<'TItem, 'TCollection>
        interface IList<'TItem>
        interface ICollection<'TItem>
        interface IEnumerable<'TItem>
        interface IEnumerable
        interface INotifyCollectionChanged
        interface INotifyPropertyChanged
        interface ICloneable
    end