### Represents the status code
  ### > For the semantics of status codes see
  ### >  https://github.com/open-telemetry/opentelemetry-specification/blob/main/specification/trace/api.md#set-status

  ## The default status.
  const UNSET = 0;

  ## The span has been validated to have been completed/processed successfully.
  const OK = 1;

  ## The span contains an error
  const ERROR = 2;