assertEquals(1, chain3.updateCallCount);
    }

    // Test addChain null handling
    @Test
    public void test_addChain_withNull() {
        // ArrayUtils.addAll handles null gracefully by adding it to the array
        authenticationManager.addChain(null);

        // Verify null chain doesn't cause issues during operations
        User user = createTestUser("testuser");
        try {

    graph.putEdgeValue(4, 4, "valueD");

    assertThat(graph.edgeValueOrDefault(1, 2, null)).isEqualTo("valueA");
    assertThat(graph.edgeValueOrDefault(2, 1, null)).isEqualTo("valueB");
    assertThat(graph.edgeValueOrDefault(2, 3, null)).isEqualTo("valueC");
    assertThat(graph.edgeValueOrDefault(4, 4, null)).isEqualTo("valueD");
    assertThat(graph.edgeValueOrDefault(1, 2, DEFAULT)).isEqualTo("valueA");

    /**
     * Checks if the item has been updated.
     *
     * @return true if the item has been updated, false otherwise.
     */
    public boolean isUpdated() {
        return newInput != null && newOutput != null;
    }

    /**
     * Checks if the item has been marked for deletion.
     *
     * @return true if the item is marked for deletion, false otherwise.
     */
    public boolean isDeleted() {

                                Severity.WARNING,
                                "server: " + server.getId(),
                                -1,
                                -1,
                                null));
                    }
                    server.setPassword(securityDispatcher.decrypt(password));
                } catch (SecDispatcherException | IOException e) {
                    problems.add(new DefaultSettingsProblem(

                            },
                            "description": {
                                "title": "Description",
                                "anyOf": [{"type": "string"}, {"type": "null"}],
                            },
                            "price": {
                                "title": "Price",
                                "type": "number",
                            },

        existNextPage = false;
        pageSize = getDefaultPageSize();
        currentPageNumber = getDefaultCurrentPageNumber();

        id = null;
        name = null;
        createdBy = null;
        createdTime = null;
        versionNo = null;

    }

    /**
     * Get the all record count.
     * @return The all record count.
     */
    public int getAllRecordCount() {

        }
    }

    /**
     * Checks if this response contains any facet information.
     *
     * @return true if either query count map or field list is not null
     */
    public boolean hasFacetResponse() {
        return queryCountMap != null || fieldList != null;
    }

    /**
     * Represents a field facet with its name and value counts.
     * Each field facet contains multiple values with their respective document counts.

    assertThrows(NullPointerException.class, () -> getMap().replace(k0(), v0(), null));
    expectUnchanged();
  }

  @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_VALUE_QUERIES)
  @CollectionSize.Require(absent = ZERO)
  public void testReplaceEntry_wrongValueNullValueUnsupported() {
    try {
      assertFalse(getMap().replace(k0(), v3(), null));
    } catch (NullPointerException tolerated) {

    assertThrows(NullPointerException.class, () -> getMap().replace(k0(), v0(), null));
    expectUnchanged();
  }

  @MapFeature.Require(value = SUPPORTS_PUT, absent = ALLOWS_NULL_VALUE_QUERIES)
  @CollectionSize.Require(absent = ZERO)
  public void testReplaceEntry_wrongValueNullValueUnsupported() {
    try {
      assertFalse(getMap().replace(k0(), v3(), null));
    } catch (NullPointerException tolerated) {

     * Do not instantiate.
     */
    protected ModifierUtil() {
    }

    /**
     * Checks if the specified method is public.
     *
     * @param method
     *            the method to check. Must not be null.
     * @return true if public, false otherwise
     */
    public static boolean isPublic(final Method method) {
        assertArgumentNotNull("method", method);

        return isPublic(method.getModifiers());
    }