@NotNull
  public List<Section> getSectionsWithNormalizedTitle(@NotNull final String title) {
    return ContainerUtil.mapNotNull(mySections,
                                    section -> section.getNormalizedTitle().equals(getNormalizedSectionTitle(title)) ? section : null);
  }
@NotNull
  public List<Section> getSectionsWithNormalizedTitle(@NotNull final String title)