Partial Type
System/ComponentModel/Design/UndoEngine.UndoUnit.cs
System/ComponentModel/Design/UndoEngine.UndoUnit.AddRemoveUndoEvent.cs
System/ComponentModel/Design/UndoEngine.UndoUnit.ChangeUndoEvent.cs
System/ComponentModel/Design/UndoEngine.UndoUnit.RenameUndoEvent.cs
System/ComponentModel/Design/UndoEngine.UndoUnit.UndoEvent.cs