}

    RuntimeException multiples(boolean overflow) {
      if (exceptionSupplier != null) {
        throw exceptionSupplier.get();
      }
      StringBuilder sb =
          new StringBuilder().append("expected one element but was: <").append(element);
      for (Object o : extras) {
        sb.append(", ").append(o);
      }
      if (overflow) {
        sb.append(", ...");
      }
      sb.append('>');

    }
  }

  private void checkHelperVersion(ClassLoader classLoader, String expectedHelperClassName)
      throws Exception {
    // Make sure we are actually running with the expected helper implementation
    Class<?> aggregateFutureStateClass =
        classLoader.loadClass(AggregateFutureState.class.getName());
    Field helperField = aggregateFutureStateClass.getDeclaredField("ATOMIC_HELPER");

        if (!MessageDigest.isEqual(this.serverSignature.getChecksum(), checksum)) {
            if (log.isDebugEnabled()) {
                log.debug(String.format("PAC signature validation failed, have: %s expected: %s type: %d len: %d",
                        Hexdump.toHexString(checksum), Hexdump.toHexString(this.serverSignature.getChecksum()),
                        this.serverSignature.getType(), data.length));
            }

## Technical Details { #technical-details }

The class `BackgroundTasks` comes directly from [`starlette.background`](https://www.starlette.dev/background/).

It is imported/included directly into FastAPI so that you can import it from `fastapi` and avoid accidentally importing the alternative `BackgroundTask` (without the `s` at the end) from `starlette.background`.

//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package bandwidth

//go:generate msgp -file=$GOFILE -unexported

import (
	"context"
	"slices"
	"sync"
	"time"

	"golang.org/x/time/rate"
)

//msgp:ignore bucketThrottle Monitor

type bucketThrottle struct {
	*rate.Limiter

 * of {@link java.util.Formatter} specifiers. However, note that if the number of arguments does not
 * match the number of occurrences of {@code "%s"} in the format string, {@code Verify} will still
 * behave as expected, and will still include all argument values in the error message; the message
 * will simply not be formatted exactly as intended.
 *
 * <h3>More information</h3>
 *

    for (Class<?> mutableClass : mutableClasses) {
      Object instance = ArbitraryInstances.get(mutableClass);
      assertWithMessage("Expected to return non-null for: %s", mutableClass)
          .that(instance)
          .isNotNull();
      assertWithMessage("Expected to return fresh instance for: " + mutableClass)
          .that(ArbitraryInstances.get(mutableClass))
          .isNotSameInstanceAs(instance);
    }
  }

/// tip | Tipp

Bei Fragen stellen Sie sie in [GitHub-Diskussionen](https://github.com/fastapi/fastapi/discussions/new?category=questions), dort besteht eine viel größere Chance, dass Sie Hilfe von den [FastAPI-Experten](fastapi-people.md#fastapi-experts) erhalten.

Nutzen Sie den Chat nur für andere allgemeine Gespräche.

///

### Den Chat nicht für Fragen verwenden { #dont-use-the-chat-for-questions }

        try {
          call.execute().use { response ->
            System.out.printf("%.2f Call was expected to fail, but completed: %s%n",
                (System.nanoTime() - startNanos) / 1e9f, response)
          }
        } catch (e: IOException) {
          System.out.printf("%.2f Call failed as expected: %s%n",
              (System.nanoTime() - startNanos) / 1e9f, e)
        }
      }
    ```

 * supported. Null keys and values are supported.
 *
 * <p>{@code containsKey(k)}, {@code put(k, v)} and {@code remove(k)} are all (expected and
 * amortized) constant time operations. Expected in the hashtable sense (depends on the hash
 * function doing a good job of distributing the elements to the buckets to a distribution not far