/*
     * Note: method names and variables start with lowercase
     * Class names start with uppercase
     *
     */
    @EventHandler
    public void spawnerChanger (PlayerInteractEvent event) {
        // if the event has no block, boooom, so we make a check
        if (!event.hasBlock()) return;
        Player player = event.getPlayer();
        Block block = event.getClickedBlock();
        // We combine the check
        if (event.getAction().equals(Action.RIGHT_CLICK_BLOCK) && block.getType() == Material.MOB_SPAWNER) {
            // Check for egg in hand
            if (player.getItemInHand().getType() == Material.MONSTER_EGG) {
                // The egg "carries" the type of the mob, stored in the durability field (383:90 e.g)
                short ID = player.getItemInHand().getDurability();
                CreatureSpawner cs = (CreatureSpawner) block.getState();
                // Set the type from the spawner to our ID [first get the type, we can use the EntityType.fromId() method]
                cs.setSpawnedType(EntityType.fromId(ID));
                cs.update();
            }
        }
    }