@Nullable
  private FileType findRegisteredFileType(@NotNull FileType provided) {
    for (final FileType existing : myAdditionalIndentOptions.keySet()) {
      if (Comparing.strEqual(existing.getDefaultExtension(), provided.getDefaultExtension())) {
        return existing;
      }
    }
    return null;
  }
@Nullable
  private FileType findRegisteredFileType(@NotNull FileType provided)