code: func (vm *VM) getTags() *compute.Tags {
  	if len(vm.Attributes.GetTag()) == 0 {
  		return nil
  	}
  	tags := &compute.Tags{
  		Items: make([]string, len(vm.Attributes.Tag)),
  	}
  	for i, tag := range vm.Attributes.Tag {
  		tags.Items[i] = tag
  	}
  	return tags
  }
docs: // getTags returns a *compute.Tags representation of this VM's tags.