httpResponse.addHeader(ACCESS_CONTROL_MAX_AGE, fessConfig.getApiCorsMaxAge());
        httpResponse.addHeader(ACCESS_CONTROL_ALLOW_CREDENTIALS, fessConfig.getApiCorsAllowCredentials());
    }

     * The value is, e.g. true <br>
     * comment: Whether to allow credentials for CORS.
     * @return The value of found property. (NotNull: if not found, exception but basically no way)
     */
    String getApiCorsAllowCredentials();

    /**
     * Is the property for the key 'api.cors.allow.credentials' true? <br>
     * The value is, e.g. true <br>
     * comment: Whether to allow credentials for CORS.