public RawAPIResponse callDeleteAPI(String relativeUrl, Map<String, String> parameters) throws FacebookException {
        ensureAuthorizationEnabled();

        String path = relativeUrl;
        if (relativeUrl.startsWith("/")) {
            path = relativeUrl.substring(1);
        }

        // not supports "JSONStore" option because this method returns the json object itself.
        HttpResponse res = delete(buildEndpoint(path, parameters));
        return new RawAPIResponseImpl(res);
    }