Instance
    host Host

    UniqueInstance host

RemoteObject
    instance InstanceId
    ident    LocalURI

    UniqueRemoteObject instance ident

RemoteMessage
    author     Int64
    instance   InstanceId
    ident      LocalURI
    identNew   RemoteObjectId
    rest       Int64
    create     Int64
    lostParent FedURI            Maybe

    UniqueRemoteMessageIdent  instance ident
    UniqueRemoteMessage       rest
    UniqueRemoteMessageCreate create