metadata

type Metadata interface {
	Read(keys ...string) (string, error)
	ReadAll() (map[string]interface{}, error)

	// Delete only returns an error if len(keys) == 0 or if the item exists and can't be deleted
	Delete(keys ...string) error
	DeleteAll() error

	// Write overrides values without returning an error unless one of keys already exists and is a value (ErrNotKey)
	Write(value string, keys ...string) error
	WriteAll(metadata map[string]interface{}) error
}