}

    @Override
    public K belowSamplesLesser() {
      return delegate.belowSamplesLesser().getKey();
    }

    @Override
    public K belowSamplesGreater() {
      return delegate.belowSamplesGreater().getKey();
    }

    @Override
    public K aboveSamplesLesser() {
      return delegate.aboveSamplesLesser().getKey();
    }

    @Override

   * of {@link #belowSamplesGreater()}.
   */
  Entry<K, V> belowSamplesLesser();

  /**
   * Returns an entry with a key less than the keys of the {@link #samples()} but greater than the
   * key of {@link #belowSamplesLesser()}.
   */
  Entry<K, V> belowSamplesGreater();

  /**

  /**
   * Returns an element less than the {@link #samples()} and less than {@link
   * #belowSamplesGreater()}.
   */
  E belowSamplesLesser();

  /**
   * Returns an element less than the {@link #samples()} but greater than {@link
   * #belowSamplesLesser()}.
   */
  E belowSamplesGreater();

  /**
   * Returns an element greater than the {@link #samples()} but less than {@link

  /**
   * Returns an element less than the {@link #samples()} and less than {@link
   * #belowSamplesGreater()}.
   */
  E belowSamplesLesser();

  /**
   * Returns an element less than the {@link #samples()} but greater than {@link
   * #belowSamplesLesser()}.
   */
  E belowSamplesGreater();

  /**
   * Returns an element greater than the {@link #samples()} but less than {@link

      return delegate().aboveSamplesGreater();
    }

    @Override
    public Entry<K, V> belowSamplesGreater() {
      return delegate().aboveSamplesLesser();
    }

    @Override
    public Entry<K, V> aboveSamplesLesser() {
      return delegate().belowSamplesGreater();
    }

    @Override
    public Entry<K, V> aboveSamplesGreater() {
      return delegate().belowSamplesLesser();

      return delegate().aboveSamplesGreater();
    }

    @Override
    public Entry<K, V> belowSamplesGreater() {
      return delegate().aboveSamplesLesser();
    }

    @Override
    public Entry<K, V> aboveSamplesLesser() {
      return delegate().belowSamplesGreater();
    }

    @Override
    public Entry<K, V> aboveSamplesGreater() {
      return delegate().belowSamplesLesser();

    sort(insertionOrder);
    return insertionOrder;
  }

  @Override
  public String belowSamplesLesser() {
    return "!! a";
  }

  @Override
  public String belowSamplesGreater() {
    return "!! b";
  }

  @Override
  public String aboveSamplesLesser() {
    return "~~ a";
  }

  @Override
  public String aboveSamplesGreater() {
    return "~~ b";
  }

  @Override
  public Entry<String, String> belowSamplesLesser() {
    return mapEntry("!! a", "below view");
  }

  @Override
  public Entry<String, String> belowSamplesGreater() {
    return mapEntry("!! b", "below view");
  }

  @Override
  public Entry<String, String> aboveSamplesLesser() {
    return mapEntry("~~ a", "above view");
  }

  @Override

  @Override
  public Entry<String, String> belowSamplesLesser() {
    return mapEntry("!! a", "below view");
  }

  @Override
  public Entry<String, String> belowSamplesGreater() {
    return mapEntry("!! b", "below view");
  }

  @Override
  public Entry<String, String> aboveSamplesLesser() {
    return mapEntry("~~ a", "above view");
  }

  @Override

                    return mapEntry("-- a", (Collection<String>) ImmutableSortedSet.of("--below"));
                  }

                  @Override
                  public Entry<String, Collection<String>> belowSamplesGreater() {
                    return mapEntry("-- b", (Collection<String>) ImmutableSortedSet.of("--below"));
                  }

                  @Override