37     protected $toggles = null;  variable in helper_plugin_usersettings
112         if ($this->toggles !== null) {
113             return $this->toggles;
119         $toggles = [];
125             if (isset($toggles[$def['key']])) {
128             $toggles[$def['key']] = $def;
131         $this->toggles = $toggles;
132         return $toggles;
143         $toggles = $this->getRegisteredToggles();
144         return $toggles[$key] ?? null;
279         $toggles = $this->getRegisteredToggles();
295             if (!isset($toggles[$key])) {
298             $clean = $this->sanitiseValue($toggles[$key], $value);