PreAuthorizedCode preAuthorizedCode = credOffer.getGrants().getPreAuthorizedCode();
        AccessTokenResponse accessTokenResponse = oauth.oid4vc()
                .preAuthorizedCodeGrantRequest(preAuthorizedCode.getPreAuthorizedCode())
                .endpoint(ctx.authorizationMetadata.getTokenEndpoint())
                .send();
        int statusCode = accessTokenResponse.getStatusCode();
        if (HttpStatus.SC_OK != statusCode) {
            throw new IllegalStateException(accessTokenResponse.getErrorDescription() != null
                    ? accessTokenResponse.getErrorDescription()
                    : "Request failed with status " + statusCode);
        }
        String accessToken = accessTokenResponse.getAccessToken();