167      * @param string $setting_name
172     public function setPreference(string $setting_name, string $setting_value): Tree  argument
174         if ($setting_value !== $this->getPreference($setting_name)) {
177                 'setting_name' => $setting_name,
182             $this->preferences[$setting_name] = $setting_value;
184 …Log::addConfigurationLog('Tree preference "' . $setting_name . '" set to "' . $setting_value . '"'…
193      * @param string      $setting_name
198     public function getPreference(string $setting_name, string|null $default = null): string  argument
207 …return $this->preferences[$setting_name] ?? $default ?? self::DEFAULT_PREFERENCES[$setting_name] ?…
264      * @param string        $setting_name
269 …public function setUserPreference(UserInterface $user, string $setting_name, string $setting_value…  argument
271         if ($this->getUserPreference($user, $setting_name) !== $setting_value) {
276                 'setting_name' => $setting_name,
282             $this->user_preferences[$user->id()][$setting_name] = $setting_value;
284 …Log::addConfigurationLog('Tree preference "' . $setting_name . '" set to "' . $setting_value . '" …
294      * @param string        $setting_name
299 …public function getUserPreference(UserInterface $user, string $setting_name, string $default = '')…  argument
311         return $this->user_preferences[$user->id()][$setting_name] ?? $default;