Scala XML Building: Adding children to existing Nodes

Question

I Have an XML Node that I want to add children to over time:

val root: Node = 

But I cannot see methods such as

Answer 1

Since scala 2.10.0 the instance constructor of Elem has changed, if you want use naive solution written by @Daniel C. Sobral, it should be:

xmlSrc match {
  case xml.Elem(prefix, label, attribs, scope, child @ _*) =>
       xml.Elem(prefix, label, attribs, scope, child.isEmpty, child ++ ballot : _*)
  case _ => throw new RuntimeException
}

For me, it works very good.