}

    /**
     * Constructs a NegTokenInit by parsing the provided token bytes
     * @param token the SPNEGO token bytes to parse
     * @throws IOException if parsing fails
     */
    public NegTokenInit(final byte[] token) throws IOException {
        parse(token);
    }

    /**
     * Gets the context flags indicating security capabilities

        // Security Buffer Length
        assertEquals(token.length, SMBUtil.readInt2(buffer, bodyOffset + 14));

        // Previous Session ID
        assertEquals(previousSessionId, SMBUtil.readInt8(buffer, bodyOffset + 16));

        // Token content
        byte[] actualToken = new byte[token.length];
        System.arraycopy(buffer, securityBufferOffset, actualToken, 0, token.length);
        assertArrayEquals(token, actualToken);

Se ele não ver o header de `Autorização` ou o valor não tem um token `Bearer`, vai responder com um código de erro  401 (`UNAUTHORIZED`) diretamente.

Você nem precisa verificar se o token existe para retornar um erro. Você pode ter certeza de que se a sua função for executada, ela terá um `str` nesse token.

Si no ve un header `Authorization`, o el valor no tiene un token `Bearer `, responderá directamente con un error de código de estado 401 (`UNAUTHORIZED`).

Ni siquiera tienes que verificar si el token existe para devolver un error. Puedes estar seguro de que si tu función se ejecuta, tendrá un `str` en ese token.

Puedes probarlo ya en los docs interactivos:

    void testParseRejectsUnknownField() throws Exception {
        ASN1TaggedObject unknown = new DERTaggedObject(true, 7, new DEROctetString(new byte[] { 0x01 }));
        byte[] token = buildInitToken(new ASN1ObjectIdentifier[] { OID_KRB }, 0, null, null, false, null, null, unknown);

        IOException ex = assertThrows(IOException.class, () -> new NegTokenInit(token));

/**
 * Represents a Kerberos authentication token.
 */
public class KerberosToken {

    private KerberosApRequest apRequest;

    /**
     * Constructs a KerberosToken from token bytes.
     *
     * @param token the token bytes
     * @throws PACDecodingException if token decoding fails
     */
    public KerberosToken(byte[] token) throws PACDecodingException {
        this(token, null);
    }

    /**

    /**
     * Constructs KerberosPacAuthData from token bytes.
     *
     * @param token the PAC token bytes
     * @param keys map of Kerberos keys indexed by key type
     * @throws PACDecodingException if PAC decoding fails
     */
    public KerberosPacAuthData(byte[] token, Map<Integer, KerberosKey> keys) throws PACDecodingException {
        this.pac = new Pac(token, keys);
    }

    /**
     * Returns the PAC object.

        String token = JsonPath.from(response).get("response.setting.token");
        checkGetMethod(requestBody, ITEM_ENDPOINT_SUFFIX + "/" + id).then()
                .body("response." + ITEM_ENDPOINT_SUFFIX + ".name", equalTo(name))
                .body("response." + ITEM_ENDPOINT_SUFFIX + ".token", equalTo(token));
    }

    @Test
    void crudTest() {
        testCreate();

    @ValidateTypeFailure
    public Integer crudMode;

    /** Token (word) to be added to the dictionary */
    @Required
    @Size(max = 1000)
    public String token;

    /** Segmentation information for the token */
    @Required
    @Size(max = 1000)
    public String segmentation;

    /** Reading (pronunciation) of the token in katakana */
    @Required
    @Size(max = 1000)
    public String reading;

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.exception;

/**
 * Exception thrown when an invalid access token is encountered.
 * This exception is typically used in authentication and authorization contexts
 * where a provided access token is invalid, expired, or malformed.
 */
public class InvalidAccessTokenException extends FessSystemException {

    /** Serial version UID for serialization */