code: public Element makeElement(SVGPlot plot) {
      Element elem = plot.svgElement(SVGConstants.SVG_PATH_TAG);
      elem.setAttribute(SVGConstants.SVG_D_ATTRIBUTE, buf.toString());
      return elem;
    }
docs: Turn the path buffer into an SVG element.
  
  @param plot Plot context (= element factory)
  @return SVG Element