public static @Nullable FoldingBuilder getOriginalBuilder(@NotNull FoldingDescriptor foldingDescriptor) {
    if (foldingDescriptor instanceof FoldingDescriptorWrapper) {
      return ((FoldingDescriptorWrapper) foldingDescriptor).myBuilder;
    }
    return null;
  }
public static @Nullable FoldingBuilder getOriginalBuilder(@NotNull FoldingDescriptor foldingDescriptor)