code: func NewAlphaFeatureGate(features []string) *AlphaFeatureGate {
  	featureMap := make(map[string]bool)
  	for _, name := range features {
  		featureMap[name] = true
  	}
  	return &AlphaFeatureGate{featureMap}
  }
docs: // NewAlphaFeatureGate marks the provided alpha features as enabled