populate

    @Override
    public void populate(WorldInfo worldInfo, Random random, int chunkX, int chunkZ, LimitedRegion limitedRegion) {
        int X, Y , Z;
        World world = Bukkit.getWorld(worldInfo.getName());

        Bukkit.getConsoleSender().sendMessage(String.valueOf(limitedRegion.getBuffer()));

        for (X = 0; X < 16; X++)
            for (Z = 0; Z < 16; Z++) {
                if(!limitedRegion.isInRegion(X * chunkX, 0, Z * chunkZ))
                    return;
                Chunk chunk = world.getChunkAt(X * chunkX, Z * chunkZ);
                for (Y = world.getMaxHeight() - 1; chunk.getBlock(X, Y, Z).getType() == Material.AIR; Y--);
                logger.info("Surface at x:" + X + " y:" + Y + " z:" + Z);
                for (; Y > 0; Y--)
                    if (isOreType(chunk.getBlock(X, Y, Z).getType())) {
                        logger.info("Cave block found at x:" + X + " y:" + Y + " z:" + Z + " and Type is " + chunk.getBlock(X, Y, Z).getType().toString());
                        chunk.getBlock(X, Y, Z).setType(Material.STONE, false);
                    }

            }
    }