@Override
  public @Nls @Nullable String generateRenderedDoc(@NotNull PsiDocCommentBase comment) {
    for (DocumentationProvider provider : getAllProviders()) {
      String result = provider.generateRenderedDoc(comment);
      if (result != null) {
        LOG.debug("generateRenderedDoc: ", provider);
        return result;
      }
    }
    return null;
  }
@Override
  public @Nls @Nullable String generateRenderedDoc(@NotNull PsiDocCommentBase comment)