/**
         * Initialize default structure of a new auto-shape
         *
         */
        public static CT_Connector Prototype()
        {
            CT_Connector          shape = new CT_Connector();
            CT_ConnectorNonVisual nv    = shape.AddNewNvCxnSpPr();

            NPOI.OpenXmlFormats.Dml.Spreadsheet.CT_NonVisualDrawingProps nvp = nv.AddNewCNvPr();
            nvp.id   = (1);
            nvp.name = ("Shape 1");
            nv.AddNewCNvCxnSpPr();

            NPOI.OpenXmlFormats.Dml.Spreadsheet.CT_ShapeProperties sp  = shape.AddNewSpPr();
            NPOI.OpenXmlFormats.Dml.Spreadsheet.CT_Transform2D     t2d = sp.AddNewXfrm();
            CT_PositiveSize2D p1 = t2d.AddNewExt();

            p1.cx = (0);
            p1.cy = (0);
            CT_Point2D p2 = t2d.AddNewOff();

            p2.x = (0);
            p2.y = (0);

            CT_PresetGeometry2D geom = sp.AddNewPrstGeom();

            geom.prst = (ST_ShapeType.line);
            geom.AddNewAvLst();

            NPOI.OpenXmlFormats.Dml.Spreadsheet.CT_ShapeStyle style = shape.AddNewStyle();
            CT_SchemeColor scheme = style.AddNewLnRef().AddNewSchemeClr();

            scheme.val      = (ST_SchemeColorVal.accent1);
            style.lnRef.idx = (1);

            CT_StyleMatrixReference fillref = style.AddNewFillRef();

            fillref.idx = (0);
            fillref.AddNewSchemeClr().val = (ST_SchemeColorVal.accent1);

            CT_StyleMatrixReference effectRef = style.AddNewEffectRef();

            effectRef.idx = (0);
            effectRef.AddNewSchemeClr().val = (ST_SchemeColorVal.accent1);

            CT_FontReference fontRef = style.AddNewFontRef();

            fontRef.idx = (ST_FontCollectionIndex.minor);
            fontRef.AddNewSchemeClr().val = (ST_SchemeColorVal.tx1);

            prototype = shape;

            return(prototype);
        }
 public static CT_Connector Prototype()
 {
     if (XSSFConnector.prototype == null)
     {
         CT_Connector             ctConnector        = new CT_Connector();
         CT_ConnectorNonVisual    connectorNonVisual = ctConnector.AddNewNvCxnSpPr();
         CT_NonVisualDrawingProps visualDrawingProps = connectorNonVisual.AddNewCNvPr();
         visualDrawingProps.id   = 1U;
         visualDrawingProps.name = "Shape 1";
         connectorNonVisual.AddNewCNvCxnSpPr();
         CT_ShapeProperties ctShapeProperties = ctConnector.AddNewSpPr();
         CT_Transform2D     ctTransform2D     = ctShapeProperties.AddNewXfrm();
         CT_PositiveSize2D  ctPositiveSize2D  = ctTransform2D.AddNewExt();
         ctPositiveSize2D.cx = 0L;
         ctPositiveSize2D.cy = 0L;
         CT_Point2D ctPoint2D = ctTransform2D.AddNewOff();
         ctPoint2D.x = 0L;
         ctPoint2D.y = 0L;
         CT_PresetGeometry2D presetGeometry2D = ctShapeProperties.AddNewPrstGeom();
         presetGeometry2D.prst = ST_ShapeType.line;
         presetGeometry2D.AddNewAvLst();
         CT_ShapeStyle ctShapeStyle = ctConnector.AddNewStyle();
         ctShapeStyle.AddNewLnRef().AddNewSchemeClr().val = ST_SchemeColorVal.accent1;
         ctShapeStyle.lnRef.idx = 1U;
         CT_StyleMatrixReference styleMatrixReference1 = ctShapeStyle.AddNewFillRef();
         styleMatrixReference1.idx = 0U;
         styleMatrixReference1.AddNewSchemeClr().val   = ST_SchemeColorVal.accent1;
         CT_StyleMatrixReference styleMatrixReference2 = ctShapeStyle.AddNewEffectRef();
         styleMatrixReference2.idx = 0U;
         styleMatrixReference2.AddNewSchemeClr().val = ST_SchemeColorVal.accent1;
         CT_FontReference ctFontReference            = ctShapeStyle.AddNewFontRef();
         ctFontReference.idx = ST_FontCollectionIndex.minor;
         ctFontReference.AddNewSchemeClr().val = ST_SchemeColorVal.tx1;
         XSSFConnector.prototype = ctConnector;
     }
     return(XSSFConnector.prototype);
 }