interface io.systemd.UserDatabase

method GetUserRecord(
        uid : ?int,
        userName : ?string,
        service : string
) -> (
        record : object,
        incomplete : bool
)

method GetGroupRecord(
        gid : ?int,
        groupName : ?string,
        service : string
) -> (
        record : object,
        incomplete : bool
)

method GetMemberships(
        userName : ?string,
        groupName : ?string,
        service : string
) -> (
        userName : string,
        groupName : string
)

error NoRecordFound()
error BadService()
error ServiceNotAvailable()
error ConflictingRecordFound()
error EnumerationNotSupported()