1. DomName('SVGNumberList.appendItem')
  2. DocsEditable()
Number appendItem(Number item)

Source 

@DomName('SVGNumberList.appendItem')
@DocsEditable()
Number appendItem(Number item) => wrap_jso(_blink.BlinkSVGNumberList.instance.appendItem_Callback_1_(unwrap_jso(this), unwrap_jso(item)));