1. @DomName('SVGPathElement.createSVGPathSegLinetoHorizontalRel')
  2. @DocsEditable()
PathSegLinetoHorizontalRel createSvgPathSegLinetoHorizontalRel(num x)

Source 

@DomName('SVGPathElement.createSVGPathSegLinetoHorizontalRel')
@DocsEditable()
PathSegLinetoHorizontalRel createSvgPathSegLinetoHorizontalRel(num x) =>
    _blink.BlinkSVGPathElement.instance
        .createSVGPathSegLinetoHorizontalRel_Callback_1_(this, x);