/**
  * Ajax call to verify a license
  */
 public static function ajax_verify_licence()
 {
     $option_licenses = new OptionLicenses();
     $licenses = $option_licenses->get_licenses();
     $license_package = isset($_POST['data']) && isset($_POST['data'][self::FIELD_LICENSE_PACKAGE]) ? $_POST['data'][self::FIELD_LICENSE_PACKAGE] : null;
     $license_activation_uuid = $option_licenses->get_license_activation_uuid($license_package);
     if (empty($license_activation_uuid)) {
         $licenses[$license_package] = array(self::FIELD_LICENSE_SUBSCRIPTION_NUMBER => $licenses[$license_package][self::FIELD_LICENSE_SUBSCRIPTION_NUMBER]);
         self::set_option_data(self::OPTION_LICENSES, $licenses);
         echo json_encode((object) array('status' => (object) array('state' => 'ERROR', 'message' => 'This license activation code is missing. Try to unactivate manually, by signin to your subscription account.')));
         die;
     }
     $managed_solr_server = new OptionManagedSolrServer();
     $response_object = $managed_solr_server->call_rest_verify_license(self::get_license_api_url(), $license_activation_uuid);
     if (isset($response_object) && OptionManagedSolrServer::is_response_ok($response_object)) {
         if (isset($licenses[$license_package])) {
             // Remove the license type activation
             $licenses = self::get_option_data(self::OPTION_LICENSES, array());
             unset($licenses[$license_package][self::FIELD_NEEDS_VERIFICATION]);
             self::set_option_data(self::OPTION_LICENSES, $licenses);
         }
     }
     // Return the whole object
     echo json_encode($response_object);
     die;
 }