private static @NotNull @NlsContexts.Tooltip HtmlChunk getTooltipTextForRoots(@NotNull Collection<? extends VirtualFile> files) {
    return getTooltipTextForFiles(files, FILE_BY_NAME_COMPARATOR, VirtualFile::getName, HtmlChunk.br());
  }
private static @NotNull @NlsContexts.Tooltip HtmlChunk getTooltipTextForRoots(@NotNull Collection<? extends VirtualFile> files)