class CassandraAttachmentOwnerDAO {

    public Flux<Username> retrieveOwners(AttachmentId attachmentId) {
        return executor.executeRows(
                selectStatement.bind()
                    .setUUID(ID, attachmentId.asUUID()))
            .map(this::toOwner);
    }

    @Inject public  CassandraAttachmentOwnerDAO(Session session);

}