if (isEmpty()) return null

  val position = ParsePosition(0)
  var result = STANDARD_DATE_FORMAT.get().parse(this, position)
  if (position.index == length) {
    // STANDARD_DATE_FORMAT must match exactly; all text must be consumed, e.g. no ignored
    // non-standard trailing "+01:00". Those cases are covered below.
    return result
  }
  synchronized(BROWSER_COMPATIBLE_DATE_FORMAT_STRINGS) {

            if (f == null) {
                throw new NullPointerException("file must not be null");
            }
            return true; // not reached in this test
        };

        // Act + Assert
        NullPointerException npe = assertThrows(NullPointerException.class, () -> filter.accept(null));
        assertEquals("file must not be null", npe.getMessage());
    }

/// tip | İpucu

[Response Model](../tutorial/response-model.md) kullanmak, doğrudan `JSONResponse` döndürmeye kıyasla genellikle çok daha iyi performans sağlar; çünkü veriyi Pydantic ile, Rust tarafında serialize eder.

///

## Bir `Response` Döndürme { #return-a-response }

Aslında herhangi bir `Response` veya onun herhangi bir alt sınıfını döndürebilirsiniz.

/// info | Bilgi

	}
	return string(s) == text, nil
}

// matcher - Finds `pat` in `text`, and returns the part remainder of
// `text`, after the match. If leadingPercent is false, `pat` must be
// the prefix of `text`, otherwise it must be a substring.
func matcher(text, pat string, leadingPercent bool) (res string, match bool) {
	if !leadingPercent {
		res = strings.TrimPrefix(text, pat)
		if len(text) == len(res) {

### Üst seviye uygulama { #top-level-application }

Önce ana, üst seviye **FastAPI** uygulamasını ve onun *path operation*’larını oluşturun:

{* ../../docs_src/sub_applications/tutorial001_py310.py hl[3, 6:8] *}

### Alt uygulama { #sub-application }

 * directly; please see {@link com.google.common.collect.testing.ListTestSuiteBuilder}.
 *
 * @author Chris Povirk
 */
@GwtCompatible
@Ignore("test runners must not instantiate and run this directly, only via suites we build")
// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")

     * @param pluginGroupId The group id of the plugin whose configuration should be used, must not be {@code null} or
     *            empty.
     * @param pluginArtifactId The artifact id of the plugin whose configuration should be used, must not be
     *            {@code null} or empty.

/// tip | Порада

Зазвичай ви отримаєте значно кращу продуктивність, використовуючи [Модель відповіді](../tutorial/response-model.md), ніж повертаючи `JSONResponse` безпосередньо, адже так дані серіалізуються Pydantic на Rust.

///

## Повернення `Response` { #return-a-response }

Ви можете повертати `Response` або будь-який його підклас.

/// info | Інформація

`JSONResponse` сам є підкласом `Response`.

///

      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works

      meet the following conditions:

      (a) You must give any other recipients of the Work or
          Derivative Works a copy of this License; and

      (b) You must cause any modified files to carry prominent notices
          stating that You changed the files; and

      (c) You must retain, in the Source form of any Derivative Works