To add a function that should be run before the application starts, declare it with the event `"startup"`:

{* ../../docs_src/events/tutorial001_py39.py hl[8] *}

In this case, the `startup` event handler function will initialize the items "database" (just a `dict`) with some values.

You can add more than one event handler function.

And your application won't start receiving requests until all the `startup` event handlers have completed.

		result.combine(e.DateDiff.Timestamp2.analyze(s))
		return result

	// Handle aggregation function calls
	case aggFnAvg, aggFnMax, aggFnMin, aggFnSum, aggFnCount:
		// Initialize accumulator
		e.aggregate = newAggVal(funcName)

		var exprA qProp
		if funcName == aggFnCount {
			if e.Count.StarArg {
				return qProp{isAggregation: true}
			}

      } else {
        // Strictly, this doesn't necessarily indicate a hidden 'this' in the case of
        // static initializer. But there seems no way to tell in that case. :(
        // This may cause issues when an anonymous class is created inside a static initializer,
        // and the class's constructor's first parameter happens to be the enclosing class.

		queueStore = store.NewQueueStore[event.Event](queueDir, args.QueueLimit, event.StoreExtension)
		if err := queueStore.Open(); err != nil {
			return nil, fmt.Errorf("unable to initialize the queue store of NSQ `%s`: %w", id, err)
		}
	}

	target := &NSQTarget{
		id:         event.TargetID{ID: id, Name: "nsq"},
		args:       args,
		loggerOnce: loggerOnce,
		store:      queueStore,

 * </ul>
 *
 * <p>Protected Constructor:</p>
 * <ul>
 *   <li>{@code ElevateWordSettings(SuggestSettings settings, Client client, String settingsIndexName, String settingsId)} -
 *       Initializes the ElevateWordSettings with the provided settings, client, index name, and settings ID.</li>
 * </ul>
 *
 * <p>Dependencies:</p>
 * <ul>

    protected long cacheDuration = 10; // min

    /**
     * Constructs a new instance of {@code XmlTransformer}.
     * This constructor initializes the transformer with default settings.
     */
    public XmlTransformer() {
        super();
    }

    /**
     * Initializes this component.
     */
    @Resource
    public void init() {
        xpathAPICache =

    private static final int TEST_LENGTH = TEST_DATA.length;

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
    }

    @Test
    @DisplayName("Test constructor initializes fields correctly")
    void testConstructor() {
        // Act
        TransTransactNamedPipe trans = new TransTransactNamedPipe(mockConfig, TEST_FID, TEST_DATA, TEST_OFFSET, TEST_LENGTH);

        // Assert

    @BeforeEach
    void setUp() {
        mockConfig = mock(Configuration.class);
        response = new Smb2SetInfoResponse(mockConfig);
    }

    @Test
    @DisplayName("Test constructor initializes with config")
    void testConstructor() {
        assertNotNull(response);
        // Command is not set in constructor, only after decoding
        assertEquals((short) 0, response.getCommand());
    }

    @Test

    private static final byte[] TEST_DATA = "Test pipe data".getBytes();

    @BeforeEach
    void setUp() {
        MockitoAnnotations.openMocks(this);
    }

    @Test
    @DisplayName("Test constructor initializes fields correctly")
    void testConstructorInitialization() {
        // Given
        int offset = 0;
        int length = TEST_DATA.length;

        // When

        MockitoAnnotations.openMocks(this);
        Properties props = new Properties();
        config = new PropertyConfiguration(props);
    }

    @Test
    void testConstructor() {
        // Test constructor initializes all fields correctly
        trans2QueryPathInfo = new Trans2QueryPathInformation(config, TEST_FILENAME, TEST_INFO_LEVEL);

        assertNotNull(trans2QueryPathInfo);