createElementNS
fun <T : Element> createElementNS(namespaceURI: TagNamespace<T>, qualifiedName: TagName<T>): T(source)
fun createElementNS(namespace: String?, qualifiedName: String, options: String = definedExternally): Element(source)
fun createElementNS(namespace: String?, qualifiedName: String, options: ElementCreationOptions): Element(source)