backend

type Backend interface {
	Create(ctx context.Context, key string) (io.WriteCloser, error)
	Open(ctx context.Context, key string) (io.ReadCloser, error)
	Remove(ctx context.Context, key string) error
	ReadDir(ctx context.Context, path string) ([]os.FileInfo, error)
	Walk(ctx context.Context, root string, walkFn filepath.WalkFunc) error
	Close(ctx context.Context) error
	Provider() string
}

type BulkRemover interface {
	RemoveAll(ctx context.Context, keys []string) ([]string, error)
}

type BulkRemovingBackend interface {
	Backend
	BulkRemover
}