builder.put("key", "value");
    assertThat(builder.build().entries()).containsExactly(Maps.immutableEntry("key", "value"));
  }

  public void testBuilderWithExpectedKeysPositive() {
    ImmutableSetMultimap.Builder<String, String> builder =
        ImmutableSetMultimap.builderWithExpectedKeys(1);
    builder.put("key", "value");

        source.put("TestKey", "value1");
        source.put("AnotherTestKey", "value2");

        Map<String, Object> nested = new HashMap<>();
        nested.put("NestedKey", "nestedValue");
        source.put("NestedMap", nested);

        Map<String, Object> result = searchLogHelper.toLowerHyphen(source);

        assertEquals("value1", result.get("test_key"));

        StringBuilder buf = new StringBuilder();
        double[] values = {};
        Supplier<Object> supplier = () -> values;

        monitorTarget.append(buf, "emptyArrayKey", supplier);
        assertEquals("\"emptyArrayKey\":[]", buf.toString());
    }

    // Test append method with String value
    public void test_append_stringValue() {
        StringBuilder buf = new StringBuilder();

        value = "${a";
        assertEquals(value, ResourceUtil.resolve(value));

        value = "$a}";
        assertEquals(value, ResourceUtil.resolve(value));

        value = "${abc}";
        assertEquals(value, ResourceUtil.resolve(value));

        value = "${abc.xyz}";
        assertEquals(value, ResourceUtil.resolve(value));

        System.setProperty("abc", "123");

        value = "${abc}";

    API. Requests made with OkUrlFactory will continue to have a default user
    agent.
 *  New: Guava-like API to create headers:

    ```java
    Headers headers = Headers.of(name1, value1, name2, value2, ...).
    ```

 *  New: Make the content-type header optional for request bodies.
 *  New: `Response.isSuccessful()` is a convenient API to check response codes.

///

### Étape 5 : retourner le contenu

{* ../../docs_src/first_steps/tutorial001.py hl[8] *}

Vous pouvez retourner un dictionnaire (`dict`), une liste (`list`), des valeurs seules comme des chaines de caractères (`str`) et des entiers (`int`), etc.

Vous pouvez aussi retourner des models **Pydantic** (qui seront détaillés plus tard).

        Map<String, String> dataMap = new HashMap<>();
        dataMap.put("key1", "value1");
        dataMap.put("key2", "");
        dataMap.put("key3", null);

        // Test with existing value
        String result1 = (String) method.invoke(crawler, dataMap, "key1", "default");
        assertEquals("value1", result1);

        // Test with empty value
        String result2 = (String) method.invoke(crawler, dataMap, "key2", "default");

        Map<String, String> innerMap = new HashMap<>();
        innerMap.put("inner", "value");
        nestedData.put("nested", innerMap);
        callback.store(params, nestedData);

        assertEquals(4L, callback.getDocumentSize());
    }

    // Helper method to create mock callbacks with preset values
    private IndexUpdateCallback createMockCallback(final long docSize, final long execTime) {

        private final String name;
        private final int value;

        public CustomTestObject(String name, int value) {
            this.name = name;
            this.value = value;
        }

        public String getName() {
            return name;
        }

        public int getValue() {
            return value;
        }

        @Override

  }

  public void testNewIdentityHashSet() {
    Set<Integer> set = Sets.newIdentityHashSet();
    Integer value1 = new Integer(12357);
    Integer value2 = new Integer(12357);
    assertTrue(set.add(value1));
    assertFalse(set.contains(value2));
    assertTrue(set.contains(value1));
    assertTrue(set.add(value2));
    assertEquals(2, set.size());
  }

  @J2ktIncompatible
  @GwtIncompatible // CopyOnWriteArraySet