Test class for Server list Player sample

PlayerSampleTestPlugin.java

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.logging.Logger;

import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.server.ServerListPingEvent;
import org.bukkit.plugin.PluginDescriptionFile;
import org.bukkit.plugin.java.JavaPlugin;

public class SampleTestPlugin extends JavaPlugin implements Listener {
    public static Logger log;
    public List<Player> hiddenPlayers = new ArrayList<Player>();

    @Override
    public void onEnable() {
        log = getLogger();
        log.info(" version " + pluginDescriptionFile.getVersion() + " enabled!");
        this.getServer().getPluginManager().registerEvents(this, this);
    }
    
    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args){
        if(!(sender instanceof Player))
            return false;
        Player player = (Player)sender;
        if(!hiddenPlayers.contains(player)){
            hiddenPlayers.add(player);
            sender.sendMessage("You've been hidden!");
        } else {
            hiddenPlayers.remove(player);
            sender.sendMessage("You've been unhidden!");
        }
        return true;
    }
    
    @EventHandler
    public void onListPing(ServerListPingEvent e){
        log.info("Server list ping recieved");
        log.info("Player Sample List: "+Arrays.toString(e.getPlayerSample().toArray()));
        for(Player i : hiddenPlayers){
            if (e.getPlayerSample().contains(i)){
                e.getPlayerSample().remove(i);
                log.info("Removed player "+i);
            }
                
        }
    }
}