* than one, not just two.
   */
  @SuppressWarnings("EmptyList") // ImmutableList doesn't support nullable element types
  @IgnoreJRERequirement // see enclosing class (whose annotation Animal Sniffer ignores here...)
  private static final class ToOptionalState<T extends @Nullable Object> {
    static final int MAX_EXTRAS = 4;

    @Nullable T element;
    List<T> extras;

    <!-- Override this with -Dtest.include="**/SomeTest.java" on the CLI -->
    <test.include>%regex[.*.class]</test.include>
    <animal-sniffer-maven-plugin.version>1.27</animal-sniffer-maven-plugin.version>
    <asm.version>9.9.1</asm.version>
    <build-helper-maven-plugin.version>3.6.1</build-helper-maven-plugin.version>
    <caliper.version>1.0-beta-3</caliper.version>

   * than one, not just two.
   */
  @SuppressWarnings("EmptyList") // ImmutableList doesn't support nullable element types
  @IgnoreJRERequirement // see enclosing class (whose annotation Animal Sniffer ignores here...)
  private static final class ToOptionalState<T extends @Nullable Object> {
    static final int MAX_EXTRAS = 4;

    @Nullable T element;
    List<T> extras;

  }

  @IgnoreJRERequirement // helper for emptiesFirst+emptiesLast
  /*
   * If we make these calls inline inside the lambda inside emptiesFirst()/emptiesLast(), we get an
   * Animal Sniffer error, despite the @IgnoreJRERequirement annotation there. For details, see
   * ImmutableSortedMultiset.
   */
  private static <T> @Nullable T orElseNull(Optional<T> optional) {
    return optional.orElse(null);

    @ParametricNullness
    R apply(@ParametricNullness T from, long index);
  }

  /*
   * @IgnoreJRERequirement should be redundant with the one on Streams itself, but it's necessary as
   * of Animal Sniffer 1.24. Maybe Animal Sniffer processes this nested class before it processes
   * Streams and thus hasn't had a chance to see Streams's annotation?
   */
  @IgnoreJRERequirement

    return reader.lines().onClose(() -> closeUnchecked(reader));
  }

  @IgnoreJRERequirement // helper for lines()
  /*
   * If we make these calls inline inside the lambda inside lines(), we get an Animal Sniffer error,
   * despite the @IgnoreJRERequirement annotation there. For details, see ImmutableSortedMultiset.
   */
  private static void closeUnchecked(Closeable closeable) {
    try {
      closeable.close();

			<groupId>com.google.guava</groupId>
			<artifactId>guava</artifactId>
			<version>${guava.version}</version>
			<exclusions>
				<exclusion>
					<groupId>org.codehaus.mojo</groupId>
					<artifactId>animal-sniffer-annotations</artifactId>
				</exclusion>
				<exclusion>
					<groupId>com.google.j2objc</groupId>
					<artifactId>j2objc-annotations</artifactId>
				</exclusion>
				<exclusion>

### Die `Settings` nur einmal laden mittels `lru_cache` { #creating-the-settings-only-once-with-lru-cache }

As principais tarefas que você pode fazer agora são:

* [Ajudar outras pessoas com perguntas no GitHub](#help-others-with-questions-in-github) (veja a seção acima).
* [Revisar Pull Requests](#review-pull-requests) (veja a seção acima).

Essas duas tarefas são as que **mais consomem tempo**. Esse é o principal trabalho de manter o FastAPI.

/// tip | Tipp

Sie müssen dies nur **einmal pro Projekt** tun, nicht jedes Mal, wenn Sie daran arbeiten.

///

//// tab | `venv`

Um eine virtuelle Umgebung zu erstellen, können Sie das `venv`-Modul verwenden, das mit Python geliefert wird.