code: public HashMap<Jid, MUCLightAffiliation> getAffiliations()
              throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
          return getAffiliations(null);
      }
docs: Get the MUC Light affiliations.
  
  @return the room affiliations
  @throws NoResponseException
  @throws XMPPErrorException
  @throws NotConnectedException
  @throws InterruptedException