How to use the builder to obtain a collection of objects

builder.groovy

class RemoteCollectionBuilder extends BuilderSupport {
  @Override
  protected Object createNode(Object name, Map attributes, Object value) {
    println("createNode $name, $attributes, $value")
    name
  }
  @Override
  protected Object createNode(Object name, Map attributes) {
    println("createNode $name, $attributes")
    name
  }
  @Override
  protected Object createNode(Object name, Object value) {
    println("createNode $name, $value")
    name
  }
  @Override
  protected Object createNode(Object name) {
    println("createNode $name")
    name
  }
  @Override
  protected void setParent(Object parent, Object child) {
    println("setParent $parent, $child")
  }
  @Override
  protected void setClosureDelegate(Closure closure, Object node) {
    println("setClosureDelegate ${closure.toString()}, $node")
  }
}

def remotes(Closure c) {
  def builder = new RemoteCollectionBuilder()
  builder.with(c)
}

remotes {
  webServer {
    role 'serversA'
    host = 'web'
    user = 'webuser'
  }
}

output.txt

createNode webServer
setClosureDelegate Script1$_run_closure1_closure2@1de3bb0, webServer
createNode role, serversA
setParent webServer, role