rules/recording.go
func (rule *RecordingRule) GetEvaluationTimestamp() time.Time {
	rule.mtx.Lock()
	defer rule.mtx.Unlock()
	return rule.evaluationTimestamp
}
func (rule *RecordingRule) GetEvaluationTimestamp() time.Time {
	rule.mtx.Lock()
	defer rule.mtx.Unlock()
	return rule.evaluationTimestamp
}
// GetEvaluationTimestamp returns the time the evaluation took place.