ipfix.yaml file for UTM export of IPFIX flows to Logstash?

From /etc/logstash/conf.d/central.conf:

input {
   type => "ipfix"
  }
  tcp {
    port => 4739
    codec => netflow {
      versions => [10]
      target => ipfix
    }
    type => "ipfix"
  }

} # end of input

output {
   if [type] == "ipfix" {
    elasticsearch {
      index => "ipfix_logs-%{+YYYY.MM.dd}"
      hosts => ["localhost:9200"]
    }
  } else {
    elasticsearch {
      index => "sophos_utm-%{+YYYY.MM.dd}"
      hosts => ["localhost:9200"]
    }
  }
} #end of output


Unfortunately, I am getting warnings in my logstash log files:

[WARN ][logstash.codecs.netflow  ] No matching template for flow id 258
[WARN ][logstash.codecs.netflow  ] No matching template for flow id 256
[WARN ][logstash.codecs.netflow  ] No matching template for flow id 258
[WARN ][logstash.codecs.netflow  ] No matching template for flow id 256
[WARN ][logstash.codecs.netflow  ] No matching template for flow id 258

Which tells me I do not have a yaml template that is compatible for the information my UTM is sending out.  I have done some web searches, but unfortunately have not found a template yet (which seems odd - I can't be the only one who want to do this.)

Can anyone provide some guidance here before I possibly go ahead and try to recreate the wheel?

Thanks

-Karl