set.clear();
    }

    private void assertFieldLogs(Map<String, List<String>> fieldLogMap) {
        @SuppressWarnings("unchecked")
        Map<String, List<String>> map = (Map<String, List<String>>) getMockRequest().getAttribute(Constants.FIELD_LOGS);
        if (fieldLogMap != null) {
            assertEquals(fieldLogMap, map);
        }
        map.clear();
    }

    private QueryContext buildQuery(String query) {

    // Hack around K not being a subtype of Comparable.
    // Unsafe, see ImmutableSortedSetFauxverideShim.
    @SuppressWarnings("unchecked")
    Ordering<K> naturalOrder = (Ordering<K>) NATURAL_ORDER;
    return copyOfInternal(map, naturalOrder);
  }

  /**
   * Returns an immutable map containing the same entries as {@code map}, with keys sorted by the

    final Map<K, V> map;

    MapMultimap(Map<K, V> map) {
      this.map = checkNotNull(map);
    }

    @Override
    public int size() {
      return map.size();
    }

    @Override
    public boolean containsKey(@Nullable Object key) {
      return map.containsKey(key);
    }

    @Override

    final Map<K, V> map;

    MapMultimap(Map<K, V> map) {
      this.map = checkNotNull(map);
    }

    @Override
    public int size() {
      return map.size();
    }

    @Override
    public boolean containsKey(@Nullable Object key) {
      return map.containsKey(key);
    }

    @Override

    TreeMap<Integer, Integer> map = Maps.newTreeMap(SOME_COMPARATOR);
    assertEquals(emptyMap(), map);
    assertThat(map.comparator()).isEqualTo(SOME_COMPARATOR);
  }

  public void testTreeMapWithInitialMap() {
    SortedMap<Integer, Integer> map = Maps.newTreeMap();
    map.put(5, 10);
    map.put(3, 20);
    map.put(1, 30);
    TreeMap<Integer, Integer> copy = Maps.newTreeMap(map);
    assertEquals(copy, map);

    // Hack around K not being a subtype of Comparable.
    // Unsafe, see ImmutableSortedSetFauxverideShim.
    @SuppressWarnings("unchecked")
    Ordering<K> naturalOrder = (Ordering<K>) NATURAL_ORDER;
    return copyOfInternal(map, naturalOrder);
  }

  /**
   * Returns an immutable map containing the same entries as {@code map}, with keys sorted by the

     *
     * @param document the document data map
     * @param url the PDF URL
     * @return the URL with search parameters
     */
    protected String appendPDFSearchWord(final Map<String, Object> document, final String url) {
        return LaRequestUtil.getOptionalRequest().map(req -> (String) req.getAttribute(Constants.REQUEST_QUERIES)).map(queries -> {
            try {

      }
    }

    @Override
    public Map<R, Map<C, V>> rowMap() {
      synchronized (mutex) {
        return map(transformValues(delegate().rowMap(), m -> map(m, mutex)), mutex);
      }
    }

    @Override
    public Map<C, Map<R, V>> columnMap() {
      synchronized (mutex) {
        return map(transformValues(delegate().columnMap(), m -> map(m, mutex)), mutex);
      }
    }

      }
    }

    @Override
    public Map<R, Map<C, V>> rowMap() {
      synchronized (mutex) {
        return map(transformValues(delegate().rowMap(), m -> map(m, mutex)), mutex);
      }
    }

    @Override
    public Map<C, Map<R, V>> columnMap() {
      synchronized (mutex) {
        return map(transformValues(delegate().columnMap(), m -> map(m, mutex)), mutex);
      }
    }

    }

    @Test
    public void test_jsonFormatter_deeplyNestedMap() {
        final Map<String, Object> source = new LinkedHashMap<>();
        final Map<String, Object> inner = new LinkedHashMap<>();
        inner.put("key", "value");
        final Map<String, Object> outer = new LinkedHashMap<>();
        outer.put("inner", inner);
        source.put("nested", outer);