code: func (t *MetricSanitizationType) NewOptions() *tally.SanitizeOptions {
  	switch *t {
  	case NoMetricSanitization:
  		return nil
  	case M3MetricSanitization:
  		return &m3.DefaultSanitizerOpts
  	case PrometheusMetricSanitization:
  		return &prometheus.DefaultSanitizerOpts
  	}
  	return nil
  }
docs: // NewOptions returns a new set of sanitization options for the sanitization type.