What is the syntax equivalentof RESOLV::lookup with the RESOLVER::name_lookup command?

So this is a more object-orientated and scalable way of doing lookups - you can think of the response ($result) being a data object which you can then interrogate as you want to. Below is an example,

when CLIENT_ACCEPTED {
  set result [RESOLVER::name_lookup "/Common/resolver1" [IP::client_addr PTR]
  log local0.debug "Response code: [ DNSMSG::header $result rcode ]"
  foreach rr { [RESOLVER::summarize $result] } {
    log local0.debug "Response from resolver1 for [IP::client_addr]: $rr"
  }
}