code: func mergeQualifiers(q1, q2 Qualifiers) Qualifiers {
  	m := make(map[string]bool)
  	for _, qual := range q1 {
  		m[qual] = true
  	}
  	for _, qual := range q2 {
  		if !m[qual] {
  			q1 = append(q1, qual)
  			m[qual] = true
  		}
  	}
  	return q1
  }
docs: // mergeQualifiers merges two qualifer lists into one.