code: func (o *ImportGKEGroup) SetAvailabilityZones(v []string) *ImportGKEGroup {
  	if o.AvailabilityZones = v; o.AvailabilityZones == nil {
  		o.nullFields = append(o.nullFields, "AvailabilityZones")
  	}
  	return o
  }
docs: // SetAvailabilityZones sets the availability zones for the gke group