Apenas use qualquer tipo de modelo, qualquer tipo de classe, qualquer tipo de banco de dados que você precise para a sua aplicação. O **FastAPI** cobre tudo com o sistema de injeção de dependências.

## Tamanho do código { #code-size }

Este exemplo pode parecer verboso. Lembre-se de que estamos misturando segurança, modelos de dados, funções utilitárias e *operações de rota* no mesmo arquivo.

Mas aqui está o ponto principal.

`UploadFile` имеет следующие методы `async`. Все они вызывают соответствующие файловые методы (используя внутренний `SpooledTemporaryFile`).

* `write(data)`: Записать данные `data` (`str` или `bytes`) в файл.
* `read(size)`: Прочитать количество `size` (`int`) байт/символов из файла.
* `seek(offset)`: Перейти к байту на позиции `offset` (`int`) в файле.
    * Например, `await myfile.seek(0)` перейдет к началу файла.

         *
         * Ideally we'd have a real eviction policy, but until we see a problem in practice, I hope
         * that this will suffice. I have not even benchmarked with different size limits.
         */
        if (validClasses.size() > 1000) {
          validClasses.clear();
        }

        validClasses.add(new WeakReference<Class<? extends Exception>>(exceptionClass));
      }
    }

    /**

    Adapters.choice(
      generalNameDnsName,
      generalNameIpAddress,
      Adapters.ANY_VALUE,
    )

  /**
   * ```
   * SubjectAltName ::= GeneralNames
   *
   * GeneralNames ::= SEQUENCE SIZE (1..MAX) OF GeneralName
   * ```
   */
  private val subjectAlternativeName: BasicDerAdapter<List<Pair<DerAdapter<*>, Any?>>> =
    generalName.asSequenceOf()

  /**

   */
  @CanIgnoreReturnValue
  public static UnsignedLong valueOf(BigInteger value) {
    checkNotNull(value);
    checkArgument(
        value.signum() >= 0 && value.bitLength() <= Long.SIZE,
        "value (%s) is outside the range for an unsigned long value",
        value);
    return fromLongBits(value.longValue());
  }

  /**

  @MapFeature.Require(SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)
  public void testPutDuplicateValuePreservesSize() {
    assertFalse(multimap().put(k0(), v0()));
    assertEquals(getNumElements(), multimap().size());
  }

  @MapFeature.Require(SUPPORTS_PUT)
  public void testPutDuplicateValue() {
    List<Entry<K, V>> entries = copyToList(multimap().entries());

    for (Entry<K, V> entry : entries) {

  @CollectionFeature.Require(SUPPORTS_REMOVE)
  public void testClear() {
    collection.clear();
    assertTrue("After clear(), a collection should be empty.", collection.isEmpty());
    assertEquals(0, collection.size());
    assertFalse(collection.iterator().hasNext());
  }

  @CollectionFeature.Require(absent = SUPPORTS_REMOVE)
  @CollectionSize.Require(absent = ZERO)
  public void testClear_unsupported() {

        .testEquals();
  }

  public void testToString() {
    assertEquals("{}", INSTANCE.toString());
  }

  public void testSize() {
    assertEquals(0, INSTANCE.size());
  }

  public void testGet() {
    assertThat(INSTANCE.get('a', 1)).isNull();
  }

  public void testIsEmpty() {
    assertTrue(INSTANCE.isEmpty());
  }

  public void testCellSet() {

  Set<E> incidentEdges();

  Set<E> inEdges();

  Set<E> outEdges();

  /**
   * Returns the set of edges connecting the origin node to {@code node}. For networks without
   * parallel edges, this set cannot be of size greater than one.
   */
  Set<E> edgesConnecting(N node);

  /**
   * Returns the node that is adjacent to the origin node along {@code edge}.
   *

        def parent = sibling.parentNode
        def next = sibling.nextSibling
        builder.elements.each { element ->
            parent.insertBefore(element, next)
        }
        return builder.elements.size() == 1 ? builder.elements[0] : builder.elements
    }