createSVGElement(w, h) {
			const svgElement = document.createElementNS(BrowserQRCodeSvgWriter.SVG_NS, 'svg');
			svgElement.setAttributeNS(null, 'height', w.toString());
			svgElement.setAttributeNS(null, 'width', h.toString());
			return svgElement;
		}
Creates a SVG element.

@param w SVG's width attribute
@param h SVG's height attribute