AssetsLoaderHelper

public final class AssetsLoaderHelper
{
    public static void loadAndProcessAssets(String directory, String extension, Consumer<Path> processor)
    {
        String PATH = "assets/" + Reference.MOD_ID + "/" + directory;

        ModContainer containerMageTech = FMLCommonHandler.instance().findContainerFor(MageTech.INSTANCE);
        File sourceMageTech = containerMageTech.getSource();

        try
        {
            FileSystem fileSystemMageTech = FileSystems.newFileSystem(sourceMageTech.toPath(), null);
            Path pathDirectory = fileSystemMageTech.getPath("/" + PATH);

            Iterator<Path> iterator = Files.walk(pathDirectory).iterator();

            while (iterator.hasNext())
            {
                Path pathFile = iterator.next();

                if (pathFile.toString().endsWith(extension))
                    processor.accept(pathFile);
            }

            IOUtils.closeQuietly(fileSystemMageTech);
        }

        catch (IOException e)
        {
            LogHelper.error(e);
        }
    }
}