Create creates a new list.

FromBlob builds a list from an encoded manifest list or image index.

ErrDigestNotFound is returned when we look for an image instance with a particular digest in a list or index, and fail to find it.

ErrManifestTypeNotSupported is returned when we attempt to parse a manifest with a known MIME type as a list or index, or when we attempt to serialize a list or index to a manifest with a MIME type that we don't know how to encode.

List is a generic interface for manipulating a manifest list or an image index.