rw := httptest.NewRecorder()
	trw := &trackingResponseWriter{ResponseWriter: rw}
	trw.WriteHeader(123)
	if !trw.headerWritten {
		t.Fatal("headerWritten was not set by WriteHeader call")
	}

	_, err := trw.Write([]byte("hello"))
	if err != nil {
		t.Fatalf("Write unexpectedly failed: %v", err)
	}

	// Check that WriteHeader and Write were called on the underlying response writer

    public int hashCode() {
      return Objects.hash(map, defaultValue);
    }

    @Override
    public String toString() {
      // TODO(cpovirk): maybe remove "defaultValue=" to make this look like the method call does
      return "Functions.forMap(" + map + ", defaultValue=" + defaultValue + ")";
    }

    @GwtIncompatible @J2ktIncompatible private static final long serialVersionUID = 0;
  }

  /**

        System.arraycopy(stringBytes, 0, buffer, 10, stringBytes.length);
        buffer[10 + stringBytes.length] = 0; // null terminator

        // Use reflection to call protected readString method
        Method readStringMethod = getReadStringMethod();
        String result = (String) readStringMethod.invoke(response, buffer, 10, 128, false);

        assertEquals(testString, result);

        NbtAddress nbtAddress = new NbtAddress(mockName, testAddressInt, false, NbtAddress.H_NODE);
        assertEquals("TESTHOST<00>/192.168.1.1", nbtAddress.toString());
    }

    // Tests for methods that call checkData(CIFSContext tc)
    @Test
    void testIsGroupAddress_CheckDataCalled() throws UnknownHostException {
        // Test isGroupAddress when checkData is called (hostName is unknown)

     * inputs, rather than as if it never tolerates them.
     *
     * We rely on checkers to implement special cases to catch dangerous calls to join(), etc. based
     * on what they know about the particular Joiner instances the calls are performed on.
     *
     * (In addition to useForNull, we also offer skipNulls. It, too, tolerates null inputs, but its

        // Verify - invalid case format should return empty due to exception
        assertFalse(result.isPresent());
    }

    // Test multiple calls to ensure consistency
    @Test
    public void test_findBusinessLocale_multipleCallsConsistency() {
        // Setup mock config
        FessConfig mockConfig = new FessConfig.SimpleImpl() {
            @Override

You could **call** that same function in **other places** without FastAPI, and it would **work as expected**. If there's a **required** parameter (without a default value), your **editor** will let you know with an error, **Python** will also complain if you run it without passing the required parameter.

    /**
     * OS family that can be tested for. {@value}
     */
    private static final String FAMILY_OS400 = "os/400";

    /**
     * OpenJDK is reported to call MacOS X "Darwin"
     *
     * @see <a href="https://issues.apache.org/bugzilla/show_bug.cgi?id=44889">bugzilla issue</a>
     * @see <a href="https://issues.apache.org/jira/browse/HADOOP-3318">HADOOP-3318</a>
     */

When you import `Query`, `Path` and others from `fastapi`, they are actually functions.

That when called, return instances of classes of the same name.

So, you import `Query`, which is a function. And when you call it, it returns an instance of a class also named `Query`.

These functions are there (instead of just using the classes directly) so that your editor doesn't mark errors about their types.

API uygulamanızın *external API*'yi çağırdığı sırada gerçekleşen sürece "callback" denir. Çünkü dış geliştiricinin yazdığı yazılım API'nize bir request gönderir ve ardından API'niz geri çağrı yaparak (*call back*), bir *external API*'ye request gönderir (muhtemelen aynı geliştiricinin oluşturduğu).