code: public static DnsAddressEndpointGroup of(String hostname, int port) {
          return new DnsAddressEndpointGroupBuilder(hostname).port(port).build();
      }
docs: Creates a {@link DnsAddressEndpointGroup} that schedules queries on a random {@link EventLoop} from
  {@link CommonPools#workerGroup()}.
  
  @param hostname the hostname to query DNS queries for
  @param port     the port of the {@link Endpoint}s