}

        try {
            T result = callable.call();
            onSuccess();
            return result;
        } catch (Exception e) {
            onFailure();
            throw e;
        }
    }

    /**
     * Execute a runnable through the circuit breaker
     *
     * @param runnable the runnable to execute

Böylece Starlette’in internal kodunun herhangi bir bölümü ya da bir Starlette extension/plug-in’i Starlette `HTTPException` raise ederse, handler’ınız bunu yakalayıp (catch) handle edebilir.

Bu örnekte, iki `HTTPException`’ı da aynı kodda kullanabilmek için Starlette’in exception’ı `StarletteHTTPException` olarak yeniden adlandırılıyor:

```Python

   */
  @Override
  public String toString() {
    int iMax = length() - 1;
    if (iMax == -1) {
      return "[]";
    }

    // Double.toString(Math.PI).length() == 17
    StringBuilder b = new StringBuilder((17 + 2) * (iMax + 1));
    b.append('[');
    for (int i = 0; ; i++) {
      b.append(longBitsToDouble(longs.get(i)));
      if (i == iMax) {

import static org.hamcrest.CoreMatchers.notNullValue;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertThat;

import java.math.BigDecimal;
import java.net.URL;
import java.sql.Timestamp;
import java.util.Calendar;
import java.util.Date;

import org.codelibs.core.beans.BeanDesc;
import org.codelibs.core.beans.PropertyDesc;

        User user = createTestUser("testuser");
        try {
            authenticationManager.insert(user);
            fail("Should throw NullPointerException when processing null chain");
        } catch (NullPointerException e) {
            // Expected behavior when null chain is processed
            assertTrue(true);
        }
    }

    // Test chains order preservation
    @Test

          SSLContext sslContext = SSLContext.getInstance("TLS");
          sslContext.init(null, new TrustManager[] { trustManager }, null);
          sslSocketFactory = sslContext.getSocketFactory();
        } catch (GeneralSecurityException e) {
          throw new RuntimeException(e);
        }

        client = new OkHttpClient.Builder()
            .sslSocketFactory(sslSocketFactory, trustManager)
            .build();

      extends UnsupportedOperationException {
    // Package-private because this should only be thrown by loadAll() when it is not overridden.
    // Cache implementors may want to catch it but should not need to be able to throw it.
    UnsupportedLoadingOperationException() {}
  }

  /**
   * Thrown to indicate that an invalid response was returned from a call to {@link CacheLoader}.
   *

   * library desugaring</a>.
   *
   * @since 33.4.0 (but since 22.0 in the JRE flavor)
   */
  // If users use this when they shouldn't, we hope that NewApi will catch subsequent Duration calls
  @IgnoreJRERequirement
  @J2ktIncompatible
  @GwtIncompatible
  @J2ObjCIncompatible
  public Duration elapsed() {
    return Duration.ofNanos(elapsedNanos());
  }

你的 API 幾乎總是需要傳回**回應**本文。但用戶端不一定每次都要送出**請求本文**，有時只會請求某個路徑，可能帶一些查詢參數，但不會傳送本文。

要宣告**請求**本文，你會使用 [Pydantic](https://docs.pydantic.dev/) 模型，享受其完整的功能與優點。

/// info

要傳送資料，應使用下列其中一種方法：`POST`（最常見）、`PUT`、`DELETE` 或 `PATCH`。

在規範中，於 `GET` 請求中攜帶本文的行為是未定義的。不過，FastAPI 仍支援它，但僅適用於非常複雜／極端的情境。

由於不建議這麼做，使用 Swagger UI 的互動式文件在使用 `GET` 時不會顯示本文的文件，而且中間的代理伺服器也可能不支援。

///

## 匯入 Pydantic 的 `BaseModel` { #import-pydantics-basemodel }

	}

	ch, confirms, err := target.channel()
	if err != nil {
		return err
	}
	defer ch.Close()

	eventData, eErr := target.store.Get(key)
	if eErr != nil {
		// The last event key in a successful batch will be sent in the channel atmost once by the replayEvents()
		// Such events will not exist and wouldve been already been sent successfully.
		if os.IsNotExist(eErr) {
			return nil
		}
		return eErr
	}