public function generateDataciteSymbol(Client $client)
    {
        $prefix = "ANDS.";
        $id = $client->client_id;

        // prefix before the
        if ($id < 100) {
            $prefix .= "CENTRE";
        }

        if ($id < 10) {
            $prefix .= "-";
        } elseif ($id >= 100) {
            // prefix before the ID (new form)
            $prefix .= "C";
        }

        $client->datacite_symbol = $prefix . $id;
        $client->save();

        return $client;
    }