public static function client_data(SI_Client $client)
 {
     $emails = array();
     $associated_users = $client->get_associated_users();
     if (!empty($associated_users)) {
         foreach ($associated_users as $user_id) {
             $user = get_userdata($user_id);
             if ($user) {
                 $emails[] = $user->user_email;
             }
         }
     }
     $client_data = array('company_name' => $client->get_title(), 'address' => $client->get_address(), 'user_ids' => $associated_users, 'user_emails' => $emails, 'phone' => $client->get_phone(), 'website' => $client->get_website(), 'estimate_ids' => $client->get_invoices(), 'invoice_ids' => $client->get_estimates(), 'payment_ids' => $client->get_payments());
     return $client_data;
 }