code: public static ResourceRecordSet<SRVData> srv(String name, Collection<String> srvdata) {
      return new SRVBuilder().name(name).addAll(srvdata).build();
    }
docs: creates srv set of {@link denominator.model.rdata.SRVData SRV} records for the specified name
  and ttl.
  
  @param name    ex. {@code denominator.io.}
  @param srvdata srvdata values ex. {@code [0 1 80 www.foo.com., 0 1 443 www.foo.com.]}