'宣言 Public Overloads Overridable Function CreateCollectionChange(Of T)( _ ByVal collection As ICollection(Of T), _ ByVal oldItem As T, _ ByVal newItem As T, _ ByVal index As Integer, _ ByVal itemTypeDisplayName As String _ ) As UndoUnit
public virtual UndoUnit CreateCollectionChange<T>( ICollection<T> collection, T oldItem, T newItem, int index, string itemTypeDisplayName )