58     protected function checkCSRF(&$error)  argument
61             $error = $this->error("Invalid CSRF token {$this->csrf}");
71         if (!$this->checkCSRF($error)) {
72             return json_encode($error);
75         if (!$this->validate($error)) {
76             return json_encode($error);
113                 $responseData = $this->error('Unknown action');
121     protected function validate(&$error)  argument
124             $error = $this->error('no payload');
129             $error = $this->error('this action is not supported');
134             $error = $this->error('this action is not supported');
139             $error = $this->error('invalid pageId');
144             $error = $this->error('you don\'t have permissions');
152     protected function error($msg)  function in dokuwiki\\plugin\\yuriigantt\\src\\JsonRequest