public PrisonPearlStorage(PrisonPearlPlugin plugin) {
   isNameLayer = Bukkit.getPluginManager().isPluginEnabled("NameLayer");
   isMysql = plugin.getPPConfig().getMysqlEnabled();
   PrisonPearlMysqlStorage = plugin.getMysqlStorage();
   transferedPlayers = new ArrayList<UUID>();
   this.plugin = plugin;
   pearls_byimprisoned = new HashMap<UUID, PrisonPearl>();
 }