public static xdr.Picture AddPicture(this x.Worksheet ws, string imagePath)
        {
            var worksheetDrawing = ws.GetWorksheetDrawing();

            return(worksheetDrawing.AddPicture(imagePath));
        }
        public static xdr.Shape AddShape(this x.Worksheet ws, a.ShapeTypeValues shapeType, string name = null)
        {
            var worksheetDrawing = ws.GetWorksheetDrawing();

            return(worksheetDrawing.AddShape(shapeType, name));;
        }