SealableObjectObservableCollectionTInsertItem - метод

protected override void InsertItem(
	int index,
	T item
)

Protected Overrides Sub InsertItem ( 
	index As Integer,
	item As T
)

protected:
virtual void InsertItem(
	int index, 
	T item
) override

abstract InsertItem : 
        index : int * 
        item : 'T -> unit 
override InsertItem : 
        index : int * 
        item : 'T -> unit