open fun resolveNS(name: String, handler: Handler<AsyncResult<MutableList<String>>>): DnsClient
Try to resolve the NS records for the given name.
name - the name for which the NS records should be resolved
handler - the to notify with the . The handler will get notified with a List that contains all resolved java.lang.Strings. If none was found it will get notified with an empty java.util.List. If an error accours it will get failed.
Return
a reference to this, so the API can be used fluently.