public ReplaceItemCommand<T> (
    Workbook workbook,
    UndoableCollection<T> collection,
    int index,
    T item,
    T newItem
)

Public New (Of T) ( _
    workbook As Workbook, _
    collection As UndoableCollection(Of T), _
    index As Integer, _
    item As T, _
    newItem As T _
)