How to use the loopback4-authentication.AuthErrorKeys.CodeExpired function in loopback4-authentication

}
    try {
      const payload: ClientAuthCode = jwt.verify(
        req.code,
        authClient.secret,
        {
          audience: req.clientId,
          subject: req.username,
          issuer: process.env.JWT_ISSUER,
        },
      ) as ClientAuthCode;

      return await this.createJWT(payload, authClient);
    } catch (error) {
      if (error.name === 'TokenExpiredError') {
        throw new HttpErrors.Unauthorized(AuthErrorKeys.CodeExpired);
        // eslint-disable-next-line no-prototype-builtins
      } else if (HttpErrors.HttpError.prototype.isPrototypeOf(error)) {
        throw error;
      } else {
        throw new HttpErrors.Unauthorized(AuthErrorKeys.InvalidCredentials);
      }
    }
  }