}
}

func jsonConverter(d any) convertFunc {
	return func(o *instance) (any, error) {
		b, err := json.Marshal(d)
		return string(b), err
	}
}

func durationConverter(value *durationpb.Duration) convertFunc {
	return func(*instance) (any, error) {
		return value.AsDuration().String(), nil
	}
}

// openCensusAgentContextConverter returns a converter that returns the list of