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Are we able to set the OTEL Resource value dynamically eg. from a field within our log for example setting the `fields.service_name` to `OTEL Resource: service.name`
```Fluentbit Tail: {"event": "my log message", "fields": {"service_name": "my_service", "datacenter": "eu-west"}} ```

Ideally with the help of a Lua script using the extended metadata support eg;
```function cb_metadata(tag, timestamp, group, metadata, record)
  ...
  return code, timestamp, metadata, record
end```