using xmlusing afButter** (HTML Element) Represents a form '<input>' of type 'hidden'.constclass Hidden : Element { @NoDocnew makeFromFinder (ElemFinder elemFinder) : super(elemFinder){}new makeFromCss (Str cssSelector) : super(cssSelector){}** Returns the 'name' attribute. Str? name(){ getAttr("name")}** Gets and sets the 'value' attribute. Str value { get { getAttr("value")} set { setAttr("value", it)}}** Submits the enclosing form to the Bed App. ButterResponse submitForm(){super.submitEnclosingForm}** Verify that the hidden element has the given value. Void verifyValueEq(Obj expected){ verifyEq(value, expected)} @NoDocoverrideprotected XElem findElem(){ elem := Attr(super.findElem)if(elem.name == "input" && elem["type"]?.lower == "hidden")return elem.elemreturn fail("Element is NOT a hidden input: ", false)}}