delegate = newDelegate;
        }
      }
    }

    /**
     * If collection is empty, remove it from {@code AbstractMapBasedMultimap.this.map}. For
     * subcollections, check whether the ancestor collection is empty.
     */
    void removeIfEmpty() {
      if (ancestor != null) {
        ancestor.removeIfEmpty();
      } else if (delegate.isEmpty()) {
        map.remove(key);

      FeatureSpecificTestSuiteBuilder<?, ? extends OneSizeTestContainerGenerator<M, Entry<K, V>>>
          parentBuilder) {
    // TODO: Once invariant support is added, supply invariants to each of the
    // derived suites, to check that mutations to the derived collections are
    // reflected in the underlying map.

    List<TestSuite> derivedSuites = super.createDerivedSuites(parentBuilder);

</div>

## Update the App with Multiple Models { #update-the-app-with-multiple-models }

Now let's **refactor** this app a bit to increase **security** and **versatility**.

If you check the previous app, in the UI you can see that, up to now, it lets the client decide the `id` of the `Hero` to create. 😱

				stmt.AddError(field.Set(stmt.Context, stmt.ReflectValue, value))
			}
		} else {
			stmt.AddError(ErrInvalidField)
		}
	} else {
		stmt.AddError(ErrInvalidField)
	}
}

// Changed check model changed or not when updating
func (stmt *Statement) Changed(fields ...string) bool {
	modelValue := stmt.ReflectValue
	switch modelValue.Kind() {
	case reflect.Slice, reflect.Array:

            return true;
        }

        return false;
    }

    /**
     * Checks if a plugin version is a target version for the current Fess installation.
     *
     * @param version the version to check
     * @return true if the version is a target version, false otherwise
     */
    protected boolean isTargetPluginVersion(final String version) {

        HttpServletRequest request = createMockRequest();
        HttpServletResponse response = createMockResponse();

        corsHandler.process(testOrigin, request, response);

        // Check all CORS headers are present
        assertNotNull(responseHeaders.get("Access-Control-Allow-Origin"), "Allow-Origin header should be set");

      super(Ordering.natural());
      this.domain = domain;
    }

    @LazyInit private transient @Nullable Integer size;

    @Override
    public int size() {
      // racy single-check idiom
      Integer result = size;
      if (result == null) {
        long total = 0;
        for (Range<C> range : ranges) {
          total += ContiguousSet.create(range, domain).size();

            // This test verifies actual behavior
            testBlock.setFlags((byte) 0x00);
            assertFalse(testBlock.isResolveInDfs());

            // The correct implementation should check flags2, not flags
            testBlock.addFlags2(SmbConstants.FLAGS2_RESOLVE_PATHS_IN_DFS);
            // But due to the bug, this still returns false
            assertFalse(testBlock.isResolveInDfs());
        }
    }

To ensure that changes in the LDAP directory are reflected in object storage access changes, MinIO performs an **Automatic LDAP sync**. MinIO periodically queries the LDAP service to:

private PersistentHandleManager handleManager;
private HandleGuid handleGuid;
private HandleType handleType;
private boolean durableHandleRequested;

protected void doConnect() throws IOException {
    // Check for existing durable handle
    handleManager = tree.getSession().getHandleManager();
    HandleInfo existingHandle = handleManager.getHandleForReconnect(getPath());
    
    if (existingHandle != null) {