@Override
    public Collection<String> getPlayerList() {
        Collection<? extends Player> players = getServer().getOnlinePlayers();
        List<String> list = new ArrayList<>(players.size());
        for (Player player : players) {
            list.add(player.getName());
        }
        return list;
    }
The time when the plugin was enabled
bukkit/src/main/java/me/lucko/luckperms/bukkit/LPBukkitBootstrap.java