/**
 * An immutable builder for {@link Multimap} instances, letting you independently select the desired
 * behaviors (for example, ordering) of the backing map and value-collections. Example:
 *
 * {@snippet :
 * ListMultimap<UserId, ErrorResponse> errorsByUser =
 *     MultimapBuilder.linkedHashKeys().arrayListValues().build();
 * SortedSetMultimap<String, Method> methodsForName =
 *     MultimapBuilder.treeKeys().treeSetValues(this::compareMethods).build();

	ID    int
	Name  string
	Token Token `gorm:"foreignKey:UserID"`
}

func (t *TokenOwner) BeforeSave(tx *gorm.DB) error {
	t.Name += "_name"
	return nil
}

type Token struct {
	UserID  int    `gorm:"primary_key"`
	Content string `gorm:"type:varchar(100)"`
}

func (t *Token) BeforeSave(tx *gorm.DB) error {
	t.Content += "_encrypted"
	return nil
}

When we convert the OpenStack cloud provider to run in an external process, we can now use the kubernetes Secrets capability to inject the OS_* variables. This way we can specify the cloud configuration as a configmap, and specify secrets for the userid/password information. The configmap is mounted as a file, and the secrets are made available as environment variables. The external controller itself runs as a pod/daemonset. For backward compatibility, we preload all the OS_* variables, and if anything...