private void leftAction(Player player) {
   if (CoolTimeChecker.check(player, 1) && PlayerInventory.checkItem(player, material, stack1)) {
     Skill.use(player, material, stack1, 1, coolTime1);
     {
       CoolTimer.cool0.put(playerName + "1", 7);
     }
   }
 }
 private void rightAction(Player player) {
   if (CoolTimeChecker.check(player, 2) && PlayerInventory.checkItem(player, material, stack2)) {
     Skill.use(player, material, stack2, 2, coolTime2);
     player.addPotionEffect(new PotionEffect(PotionEffectType.REGENERATION, 500, 0), true);
   }
 }