@Override
  public final boolean iterateFiles(@NotNull Project project,
                                    @NotNull ContentIterator fileIterator,
                                    @NotNull VirtualFileFilter fileFilter) {
    return IndexableFilesIterationMethods.INSTANCE.iterateRoots(project, roots, fileIterator, fileFilter, true);
  }
@Override
  public final boolean iterateFiles(@NotNull Project project,
                                    @NotNull ContentIterator fileIterator,
                                    @NotNull VirtualFileFilter fileFilter)