return o != null;
      }

      @Override
      public String toString() {
        return "Predicates.notNull()";
      }
    };

    @SuppressWarnings("unchecked") // safe contravariant cast
    <T extends @Nullable Object> Predicate<T> withNarrowedType() {
      return (Predicate<T>) this;
    }
  }

  /**
   * @see Predicates#not(Predicate)
   */

            }
        }
        return false;
    }

    private static boolean pathNamesPossiblyEqual(final String path1, final String path2) {
        int p1, p2, l1, l2;

        // if unsure return this method returns true

        p1 = path1.lastIndexOf('/');
        p2 = path2.lastIndexOf('/');
        l1 = path1.length() - p1;
        l2 = path2.length() - p2;

    new TypeVisitor() {
      @Override
      void visitTypeVariable(TypeVariable<?> type) {
        throw new IllegalArgumentException(
            runtimeType + "contains a type variable and is not safe for the operation");
      }

      @Override
      void visitWildcardType(WildcardType type) {
        visit(type.getLowerBounds());
        visit(type.getUpperBounds());
      }

      @Override

   * of Java 20, it always throws an exception, and as of Java 26, the method does not even exist.
   * For now, we continue using it to clean up under older JDKs.
   *
   * Our usages should at least be *relatively* safe: Typically, threads started by a test are dying
   * at the end of the test, so there is no object state put at risk by stopping the threads
   * abruptly. In other cases, a test may put a thread into an uninterruptible operation

<img src="/img/tutorial/security/image10.png">

/// note | Nota

Perceba que o cabeçalho `Authorization`, com o valor que começa com `Bearer `.

///

## Uso avançado com `scopes` { #advanced-usage-with-scopes }

O OAuth2 tem a noção de "scopes" (escopos).

Você pode usá-los para adicionar um conjunto específico de permissões a um token JWT.

### 追加のオプション依存関係 { #additional-optional-dependencies }

追加でインストールしたい依存関係があります。

追加のオプション Pydantic 依存関係:

* [`pydantic-settings`](https://docs.pydantic.dev/latest/usage/pydantic_settings/) - 設定管理のため。
* [`pydantic-extra-types`](https://docs.pydantic.dev/latest/usage/types/extra_types/extra_types/) - Pydantic で使用する追加の型のため。

追加のオプション FastAPI 依存関係:

* [`orjson`](https://github.com/ijl/orjson) - `ORJSONResponse` を使用したい場合に必要です。

		if v == "" {
			continue // Keep the original USTAR value
		}
		var id64 int64
		switch k {
		case paxPath:
			hdr.Name = v
		case paxLinkpath:
			hdr.Linkname = v
		case paxUname:
			hdr.Uname = v
		case paxGname:
			hdr.Gname = v
		case paxUid:
			id64, err = strconv.ParseInt(v, 10, 64)
			hdr.Uid = int(id64) // Integer overflow possible
		case paxGid:
			id64, err = strconv.ParseInt(v, 10, 64)

            }
        }
    }

    @Nested
    @DisplayName("Integration Pattern Tests")
    class IntegrationPatternTests {

        @Test
        @DisplayName("Should simulate usage in Smb2CreateRequest context")
        void testSimulatedUsagePattern() {
            // Simulate the pattern from Smb2CreateRequest
            CreateContextRequest[] contexts = new CreateContextRequest[3];

        assertTrue(item1.equals(item2));
        assertTrue(item2.equals(item1));
    }

    @Test
    public void test_equals_withNullInput() {
        // Test equals with null input - should not throw, uses null-safe comparison
        ProtwordsItem item1 = new ProtwordsItem(1, null);
        ProtwordsItem item2 = new ProtwordsItem(2, null);
        ProtwordsItem item3 = new ProtwordsItem(1, "word");

   *       directly during deserialization. However, we would lose Java's guarantees for {@code
   *       final} fields, including that their values are guaranteed to be visible even when an
   *       instance is unsafely published.
   * </ul>
   */
  private transient @Nullable ConcurrentHashMultiset<E> deserializationReplacement;

  /**
   * Creates a new, empty {@code ConcurrentHashMultiset} using the default initial capacity, load