JsonValue performDynamicClientRegistration(
      final Context context,
      final JsonValue clientRegistrationConfiguration,
      final URI registrationEndpoint)
      throws RegistrationException {
    final Request request = new Request();
    request.setMethod("POST");
    request.setUri(registrationEndpoint);
    request.setEntity(clientRegistrationConfiguration.asMap());

    final Response response;
    try {
      response = blockingCall(registrationHandler, context, request);
    } catch (InterruptedException e) {
      throw new RegistrationException(
          format("Interrupted while waiting for '%s' response", request.getUri()), e);
    }
    if (!CREATED.equals(response.getStatus())) {
      throw new RegistrationException(
          "Cannot perform dynamic registration: this can be caused "
              + "by the distant server(busy, offline...) "
              + "or a malformed registration response.");
    }
    try {
      return getJsonContent(response);
    } catch (OAuth2ErrorException e) {
      throw new RegistrationException(
          "Cannot perform dynamic registration: invalid response JSON content.");
    }
  }
 private Request newRequest() throws Exception {
   Request request = new Request();
   request.setUri("http://openig.forgerock.org");
   return request;
 }