Si quieres capturar excepciones y crear un response personalizado en base a eso, crea un [Manejador de Excepciones Personalizado](../handling-errors.md#install-custom-exception-handlers).

## Dependencias con `yield` y `except` { #dependencies-with-yield-and-except }

* el evento
* el evento de inicio
* el inicio del servidor
* el evento de apagado
* el evento de lifespan

* el manejador
* el manejador de eventos
* el manejador de excepciones
* manejar

* el modelo
* el modelo de Pydantic
* el modelo de datos
* el modelo de base de datos
* el modelo de formulario
* el objeto del modelo

* la clase
* la clase base

    // Exceptions
    // ------------------------------------------------------------------------

    public boolean hasExceptions() {
        return exceptions != null && !exceptions.isEmpty();
    }

    public List<Exception> getExceptions() {
        return exceptions == null ? Collections.emptyList() : Collections.unmodifiableList(exceptions);
    }

        exceptions = deleteDirectoryContentsInsecure(stream);
      }
    } catch (IOException e) {
      if (exceptions == null) {
        throw e;
      } else {
        exceptions.add(e);
      }
    }

    if (exceptions != null) {
      throwDeleteFailed(path, exceptions);
    }
  }

  /**
   * Secure recursive delete using {@code SecureDirectoryStream}. Returns a collection of exceptions

        assertTrue(endLatch.await(30, TimeUnit.SECONDS), "All threads should complete within timeout");
        executor.shutdown();

        // Then - Verify no exceptions occurred
        if (!exceptions.isEmpty()) {
            fail("Concurrent operations caused exceptions: " + exceptions.get(0));
        }

        assertEquals(threadCount * opsPerThread, successCount.get(), "All operations should succeed");
    }

    /**

            thread.join();
        }

        // Verify no exceptions occurred
        for (int i = 0; i < threadCount; i++) {
            assertNull(exceptions[i], "Thread " + i + " threw exception");
        }

        // Verify all URLs were added
        synchronized (mockCallback) {
            assertEquals("All URLs should be added", threadCount * urlsPerThread, callback.deleteUrlList.size());

        final Exception[] exceptions = new Exception[threadCount];

        for (int i = 0; i < threadCount; i++) {
            final int index = i;
            threads[i] = new Thread(() -> {
                try {
                    dataStore.stop();
                } catch (Exception e) {
                    exceptions[index] = e;
                }
            });
        }

    }
    return Collections.unmodifiableList(causes);
  }

  /**
   * Returns {@code throwable}'s cause, cast to {@code expectedCauseType}.
   *
   * <p>Prefer this method instead of manually casting an exception's cause. For example, {@code
   * (IOException) e.getCause()} throws a {@link ClassCastException} that discards the original
   * exception {@code e} if the cause is not an {@link IOException}, but {@code

        System.out.printf("  Avg tree operation time: %.2f ns%n", avgOpTimeNs);

        // Verify thread safety and performance
        assertTrue(exceptions.isEmpty(), "No exceptions should occur with thread-safe collections: " + exceptions);
        assertEquals(threadCount * operationsPerThread, treeOperations.get());
        assertTrue(avgOpTimeNs < 100000, "Tree operations should be reasonable with CopyOnWriteArrayList");

                } catch (e: Exception) {
                    exceptions.add(e)
                }
            }

        when {
            exceptions.size == 1 -> throw exceptions.first()
            exceptions.isNotEmpty() -> throw DefaultMultiCauseException("Test files cleanup verification failed", exceptions)
            else -> {
            }
        }
    }

    private