@Override
  public VirtualFile @NotNull [] getExcludeRoots() {
    final List<VirtualFile> result = new SmartList<>();
    for (ContentEntry contentEntry : getContent()) {
      Collections.addAll(result, contentEntry.getExcludeFolderFiles());
    }
    return VfsUtilCore.toVirtualFileArray(result);
  }
@Override
  public VirtualFile @NotNull [] getExcludeRoots()