pocketmine\plugin\Plugin::getDataFolder PHP Method

    public function getDataFolder();

 public static function getSimpleAuthData(Plugin $plugin, $db = null)
 {
     if (!file_exists($plugin->getDataFolder() . "SimpleAuth/players")) {
         return;
     }
     $config = (new Config($plugin->getDataFolder() . "SimpleAuth/config.yml", Config::YAML))->getAll();
     $provider = $config["dataProvider"];
     switch (strtolower($provider)) {
         case "yaml":
             $plugin->getLogger()->debug("Using YAML data provider");
             $provider = new YAMLDataProvider($plugin);
             break;
         case "sqlite3":
             $plugin->getLogger()->debug("Using SQLite3 data provider");
             $provider = new SQLite3DataProvider($plugin);
             break;
         case "mysql":
             $plugin->getLogger()->debug("Using MySQL data provider");
             $provider = new MySQLDataProvider($plugin);
             break;
         case "none":
         default:
             $provider = new DummyDataProvider($plugin);
             break;
     }
     $folderList = self::getFolderList($plugin->getDataFolder() . "SimpleAuth/players", "folder");
     foreach ($folderList as $alphabet) {
         $ymlList = self::getFolderList($plugin->getDataFolder() . "SimpleAuth/players/" . $alphabet, "file");
         foreach ($ymlList as $ymlName) {
             $yml = (new Config($plugin->getDataFolder() . "SimpleAuth/players/" . $alphabet . "/" . $ymlName, Config::YAML))->getAll();
             $name = explode(".", $ymlName)[0];
             if ($db instanceof PluginData) {
                 $db->addAuthReady(mb_convert_encoding($name, "UTF-8"), $yml["hash"]);
             }
         }
     }
     self::rmdirAll($plugin->getDataFolder() . "SimpleAuth");
 }