How to use the cwl-svg.Workflow function in cwl-svg

ngAfterViewInit() {


        this.graph = new WorkflowGraph({
            svgRoot: this.canvas.nativeElement,
            model: this.model as any,
            plugins: [
                new SVGEdgeHoverPlugin(),
                new SelectionPlugin(),
                new ZoomPlugin(),
                new SVGNodeMovePlugin(),
                new SVGJobFileDropPlugin(),
                new SVGArrangePlugin(),
                new SVGRequiredInputMarkup(),
                new SVGExecutionProgressPlugin(),
            ]
        });

        this.graph.fitToViewport();
        this.draw.emit(this);

drawGraphAndAttachListeners() {

        this.graph = new Workflow({
            svgRoot: this.canvas.nativeElement as SVGSVGElement,
            model: this.model as any,
            plugins: [
                new SVGArrangePlugin(),
                new SVGPortDragPlugin(),
                new SVGNodeMovePlugin(),
                new SVGEdgeHoverPlugin(),
                new SVGValidatePlugin(),
                new SelectionPlugin(),
                new ZoomPlugin(),
                new DeletionPlugin(),
                new UpdatePlugin()
            ],
            editingEnabled: !this.readonly
        });