Map<String, Long> in = ImmutableMap.of("1", 1L, "2", 2L, "3", 3L);
    AtomicLongMap<String> map = AtomicLongMap.create();
    assertTrue(map.isEmpty());
    assertEquals(0, map.size());
    assertFalse(map.containsKey("1"));
    assertFalse(map.containsKey("2"));
    assertFalse(map.containsKey("3"));
    assertEquals(0L, map.get("1"));
    assertEquals(0L, map.get("2"));
    assertEquals(0L, map.get("3"));

    map.putAll(in);

        # TF 2.9
        map sigbuild-r2.9 2.9-python3.9
        map sigbuild-r2.9-python3.8 2.9-python3.8
        map sigbuild-r2.9-python3.9 2.9-python3.9
        map sigbuild-r2.9-python3.10 2.9-python3.10
        # TF 2.10
        map sigbuild-r2.10 2.10-python3.9
        map sigbuild-r2.10-python3.8 2.10-python3.8
        map sigbuild-r2.10-python3.9 2.10-python3.9
        map sigbuild-r2.10-python3.10 2.10-python3.10

    Tree {
      @Override
      Map<Element, Element> create(Collection<Element> keys) {
        Map<Element, Element> map = Maps.newTreeMap();
        for (Element element : keys) {
          map.put(element, element);
        }
        return map;
      }
    },
    SkipList {
      @Override
      Map<Element, Element> create(Collection<Element> keys) {
        Map<Element, Element> map = new ConcurrentSkipListMap<>();

            return Map.of();
        }
    }

    /**
     * Gets a nested map value from the given map.
     *
     * @param map the source map.
     * @param key the key to look up.
     * @return the map value, or {@code null} if not found or not a map.
     */
    @SuppressWarnings("unchecked")
    protected Map<String, Object> getMapValue(final Map<String, Object> map, final String key) {

  }

  public void testTransformSingletonMapEquality() {
    Map<String, String> map =
        transformValues(ImmutableMap.of("a", 1), Functions.toStringFunction());
    Map<String, String> expected = ImmutableMap.of("a", "1");
    assertMapsEqual(expected, map);
    assertThat(map.get("a")).isEqualTo(expected.get("a"));
  }

  public void testTransformIdentityFunctionEquality() {

        Map<String, Object> parentMap = new LinkedHashMap<>();
        DocMap docMap = new DocMap(parentMap);

        docMap.put("lang", "fr");

        Set<Map.Entry<String, Object>> entrySet = docMap.entrySet();
        assertEquals(1, entrySet.size());

        String[] keys = entrySet.stream().map(Map.Entry::getKey).toArray(String[]::new);
        assertEquals("lang", keys[0]);
    }

    @Test

  }

  public void testTransformSingletonMapEquality() {
    Map<String, String> map =
        transformValues(ImmutableMap.of("a", 1), Functions.toStringFunction());
    Map<String, String> expected = ImmutableMap.of("a", "1");
    assertMapsEqual(expected, map);
    assertThat(map.get("a")).isEqualTo(expected.get("a"));
  }

  public void testTransformIdentityFunctionEquality() {

        }
    }

    /**
     * Copies from a {@literal Map} to another {@literal Map}.
     *
     * @param src The source {@literal Map}. Must not be {@literal null}.
     * @param dest The destination {@literal Map}. Must not be {@literal null}.
     */
    public static void copyMapToMap(final Map<String, ? extends Object> src, final Map<String, Object> dest) {
        copyMapToMap(src, dest, DEFAULT_OPTIONS);
    }

        assertThat(map.isEmpty(), is(false));
        assertThat(map.get(Foo.class.getTypeParameters()[0]), is(sameClass(Object.class)));
    }

    /**
     * @throws Exception
     */
    public void testGenericMethod() throws Exception {
        final Map<TypeVariable<?>, Type> map = GenericsUtil.getTypeVariableMap(Fuga.class);
        assertThat(map, is(notNullValue()));
        assertThat(map.isEmpty(), is(true));

    Map<Integer, String> map = CompactLinkedHashMap.create();
    map.put(1, "a");
    map.put(4, "b");
    map.put(3, "d");
    map.put(2, "c");
    map.remove(4);
    testHasMapEntriesInOrder(map, 1, "a", 3, "d", 2, "c");
  }

  public void testInsertionOrderAfterRemoveLastEntry() {
    Map<Integer, String> map = CompactLinkedHashMap.create();
    map.put(1, "a");
    map.put(4, "b");