NewClient creates new client from the given DB.

NewClientFromConfig creates a new metastor client from the given config.

ErrNilKey is the error returned by a metastor client, in case a nil key is given as part of a request.

ErrNotFound is the error returned by a metastor client, in case metadata requested couldn't be found.

Client defines the client API of a metadata server.

Config is used to create a (metastor) Client.