27     private $actionPlugin = null;  variable in admin_plugin_deletepageguard
34         if ($this->actionPlugin === null) {
35             $this->actionPlugin = plugin_load('action', 'deletepageguard');
37         return $this->actionPlugin;
170         $actionPlugin = $this->getActionPlugin();
171         if (!$actionPlugin) {
176         $result = $actionPlugin->validateRegexPattern($pattern, 0);
194         $actionPlugin = $this->getActionPlugin();
195         if (!$actionPlugin) {
209             if ($actionPlugin->validateRegexPattern($pattern, 0) === true) {
252             $matchTarget = $actionPlugin->getMatchTarget($pageId);
256                 if ($actionPlugin->matchesPattern($pattern, $matchTarget)) {