public List func_135056_b(ResourceLocation par1ResourceLocation) throws IOException {
    ResourceManager resourcemanager =
        (ResourceManager) this.field_110548_a.get(par1ResourceLocation.func_110624_b());

    if (resourcemanager != null) {
      return resourcemanager.func_135056_b(par1ResourceLocation);
    } else {
      throw new FileNotFoundException(par1ResourceLocation.toString());
    }
  }