code: public SubscribeForm getSubscriptionOptions(String jid) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
          return getSubscriptionOptions(jid, null);
      }
docs: Returns a SubscribeForm for subscriptions, from which you can create an answer form to be submitted
  via the {@link #sendConfigurationForm(Form)}.
  
  @param jid
  
  @return A subscription options form
  @throws XMPPErrorException
  @throws NoResponseException
  @throws NotConnectedException
  @throws InterruptedException