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());
        for (X = 0; X < 16; X++)
            for (Z = 0; Z < 16; Z++) {

                int Xcord = (chunkX * 16) + X;
                int Zcord = (chunkZ * 16) + Z;

                if(!limitedRegion.isInRegion(Xcord, 0, Zcord))
                    continue;
                for (Y = world.getMaxHeight() - 1; limitedRegion.getBlockData(Xcord, Y, Zcord).getMaterial() == Material.AIR; Y--);
                //logger.info("Surface at x:" + Xcord + " y:" + Y + " z:" + Zcord);
                for (; Y > -65; Y--){
                    if (oreMaterial.contains(limitedRegion.getBlockData(Xcord, Y, Zcord).getMaterial())){
                        logger.info("Cave block found at x:" + Xcord + " y:" + Y + " z:" + Zcord + " and Type is " + limitedRegion.getBlockData(Xcord, Y, Zcord).getMaterial());
                        limitedRegion.setBlockData(Xcord, Y, Zcord, Bukkit.createBlockData(Material.SPONGE));
                    }
                    if (deepOreMaterial.contains(limitedRegion.getBlockData(Xcord, Y, Zcord).getMaterial())){
                        logger.info("Cave block found at x:" + Xcord + " y:" + Y + " z:" + Zcord + " and Type is " + limitedRegion.getBlockData(Xcord, Y, Zcord).getMaterial());
                        limitedRegion.setBlockData(Xcord, Y, Zcord, Bukkit.createBlockData(Material.SPONGE));
                    }

                }
            }
    }