public override void Remove(DrawingElement drawingElement) { elements.Remove(drawingElement); }
public override void Add(DrawingElement drawingElement) { elements.Add(drawingElement); }
public override void Remove(DrawingElement drawingElement) { Console.WriteLine( "Cannot remove from a PrimitiveElement"); }
public override void Add(DrawingElement drawingElement) { Console.WriteLine( "Cannot add to a PrimitiveElement"); }
public abstract void Remove(DrawingElement drawingElement);
public abstract void Add(DrawingElement drawingElement);