if (e.getCause() instanceof DecodingException) {
                return BASE64URL_DECODER.decode(base64String.trim());
            }
            throw e;
        }
    }

    /**
     * Processes the callback from OpenID Connect provider.
     *
     * @param request the HTTP servlet request
     * @param code the authorization code
     * @return the login credential
     */

        }

    }

    /**
     * Internal search method that executes the actual search query.
     *
     * This method performs the search using the rank fusion processor and may retry
     * with OR operator if the hit count is below the configured minimum threshold.
     *
     * @param query The search query string
     * @param params The search request parameters