Collection<V> unmodifiableEmptyCollection() {
    if (unfiltered instanceof SetMultimap) {
      return emptySet();
    } else {
      return emptyList();
    }
  }

  @Override
  public void clear() {
    keySet().clear();
  }

  @Override
  Set<K> createKeySet() {
    return Sets.filter(unfiltered.keySet(), keyPredicate);
  }

  @Override
  public Collection<V> get(@ParametricNullness K key) {

errors.invalid_query_cannot_process=Impossibile elaborare la query specificata.
errors.crud_invalid_mode = Modalità non valida. (È {1}, non {0})
errors.crud_failed_to_create_instance = Impossibile creare nuovi dati.
errors.crud_failed_to_create_crud_table = Impossibile creare nuovi dati. ({0})
errors.crud_failed_to_update_crud_table=Impossibile aggiornare i dati. ({0})
errors.crud_failed_to_delete_crud_table=Impossibile eliminare i dati. ({0})

            field.setAccessible(true);
        }
        field.set(bean, value);
    }

    /**
     * Clear all caches. Useful for testing or memory management.
     */
    public static void clearCaches() {
        METHOD_CACHE.clear();
        FIELD_CACHE.clear();
    }

    }

    /**
     * @throws Exception
     */
    @Test
    public void testClear() throws Exception {
        final BeanDesc beanDesc = BeanDescFactory.getBeanDesc(MyBean.class);
        BeanDescFactory.clear();
        assertThat(BeanDescFactory.getBeanDesc(MyBean.class), is(not(sameInstance(beanDesc))));
    }

    /**
     *
     */
    public static class MyBean {

        /**
         * @return String

### Aplicación de nivel superior { #top-level-application }

Primero, crea la aplicación principal de nivel superior de **FastAPI**, y sus *path operations*:

{* ../../docs_src/sub_applications/tutorial001_py39.py hl[3, 6:8] *}

### Sub-aplicación { #sub-application }

Luego, crea tu sub-aplicación, y sus *path operations*.

							return
						}
					}
				}
			}
			zb0001Mask |= 0x1
		default:
			err = dc.Skip()
			if err != nil {
				err = msgp.WrapError(err)
				return
			}
		}
	}
	// Clear omitted fields.
	if (zb0001Mask & 0x1) == 0 {
		z.ObjectV2 = nil
	}

	return
}

// EncodeMsg implements msgp.Encodable
func (z *xlMetaDataDirDecoder) EncodeMsg(en *msgp.Writer) (err error) {

{* ../../docs_src/background_tasks/tutorial001.py hl[1,13] *}

**FastAPI** créera l'objet de type `BackgroundTasks` pour vous et le passera comme paramètre.

## Créer une fonction de tâche

Une fonction à exécuter comme tâche d'arrière-plan est juste une fonction standard qui peut recevoir des paramètres.

        List<SmbTransportImpl> toClose = new ArrayList<>(this.connections);
        toClose.addAll(this.nonPooledConnections);

        // Clear the collections (thread-safe operations)
        this.connections.clear();
        this.nonPooledConnections.clear();
        this.activeConnections.set(0);

        // Close all connections outside of synchronization
        for (final SmbTransportImpl conn : toClose) {

    }
    return delegate.addAll(collection);
  }

  @Override
  public @Nullable E ceiling(E e) {
    return delegate.ceiling(checkValid(e));
  }

  @Override
  public void clear() {
    delegate.clear();
  }

  @Override
  public Comparator<? super E> comparator() {
    Comparator<? super E> comparator = delegate.comparator();
    if (comparator == null) {

        return key;
    }

    /**
     * Clear all stored keys
     */
    public void clearAllKeys() {
        checkNotClosed();

        log.info("Clearing all stored keys");

        // Wipe all raw keys
        for (Map.Entry<String, byte[]> entry : rawKeys.entrySet()) {
            Arrays.fill(entry.getValue(), (byte) 0);
        }
        rawKeys.clear();

        // Destroy all secret keys