/**
     * Factory for creating crawler clients.
     */
    @Resource
    protected CrawlerClientFactory clientFactory;

    /**
     * Context object containing crawler state and configuration.
     */
    protected CrawlerContext crawlerContext;

    /**
     * Flag indicating whether the crawler runs in background mode.
     */
    protected boolean background = false;

      reproduction, and distribution of the Work otherwise complies with
      the conditions stated in this License.

   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work
      by You to the Licensor shall be under the terms and conditions of
      this License, without any additional terms or conditions.

* Parayı tahsil eder.
* API kullanıcısına (external geliştiriciye) tekrar bir bildirim gönderir.
    * Bu, external geliştiricinin sağladığı bir *external API*'ye (sizin API'nizden) bir POST request gönderilerek yapılır (işte bu "callback"tir).

## Normal **FastAPI** uygulaması { #the-normal-fastapi-app }

Önce callback eklemeden önce normal API uygulamasının nasıl görüneceğine bakalım.

        super.tearDown(testInfo);
    }

    // ===================================================================================
    //                                                                       Entity State
    //                                                                       =============

    @Test
    public void test_isLoggingEnabled_true() {
        final ScheduledJob job = new ScheduledJob();

        NtTransQuerySecurityDesc desc3 = new NtTransQuerySecurityDesc(mockConfig, 0x3333, DACL_SECURITY_INFORMATION);

        // Verify each instance maintains its own state
        assertEquals(0x1111, desc1.fid);
        assertEquals(OWNER_SECURITY_INFORMATION, desc1.securityInformation);

        assertEquals(0x2222, desc2.fid);

        for (Thread thread : updateThreads) {
            thread.join(5000);
        }
        for (Thread thread : readThreads) {
            thread.join(5000);
        }

        // Verify final state
        assertEquals(100, entry.getChildren().size());
        assertTrue(entry.hasChanges());
    }

			t.Errorf("%d. got error = %v; want %v", i, err, tt.wanterr)
		}
	}
}

func TestReaderAtConcurrent(t *testing.T) {
	// Test for the race detector, to verify ReadAt doesn't mutate
	// any state.
	r := NewReader([]byte("0123456789"))
	var wg sync.WaitGroup
	for i := 0; i < 5; i++ {
		wg.Add(1)
		go func(i int) {
			defer wg.Done()
			var buf [1]byte
			r.ReadAt(buf[:], int64(i))
		}(i)
	}

		var wg sync.WaitGroup
		wg.Add(len(clnts))
		onlineServers = 0
		for _, clnt := range clnts {
			go func(clnt *bootstrapRESTClient) {
				defer wg.Done()

				if clnt.gridConn.State() != grid.StateConnected {
					mu.Lock()
					offlineEndpoints = append(offlineEndpoints, fmt.Errorf("%s is unreachable: %w", clnt, grid.ErrDisconnected))
					mu.Unlock()
					return
				}

	// of splitting error text and always pretty printing the
	// red banner along with the error message. Since the error
	// message itself contains some colored text, we needed
	// to use some ANSI control escapes to cursor color state
	// and freely move in the screen.
	for line := range strings.SplitSeq(errMsg, "\n") {
		if len(line) == 0 {
			// No more text to print, just quit.
			break
		}

   * AsyncFunction.apply}. Any heavyweight operations should occur in other threads responsible for
   * completing the returned {@code Future}.)
   *
   * <p>The returned {@code Future} attempts to keep its cancellation state in sync with that of the
   * input future and that of the future returned by the chain function. That is, if the returned
   * {@code Future} is cancelled, it will attempt to cancel the other two, and if either of the