code: public List<Jid> getUsersAndRoomsBlocked(DomainBareJid mucLightService)
              throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
          MUCLightBlockingIQ muclIghtBlockingIQResult = getBlockingList(mucLightService);
  
          List<Jid> jids = new ArrayList<>();
          if (muclIghtBlockingIQResult.getRooms() != null) {
              jids.addAll(muclIghtBlockingIQResult.getRooms().keySet());
          }
  
          if (muclIghtBlockingIQResult.getUsers() != null) {
              jids.addAll(muclIghtBlockingIQResult.getUsers().keySet());
          }
  
          return jids;
      }
docs: Get users and rooms blocked.
  
  @param mucLightService
  @return the list of users and rooms blocked
  @throws NoResponseException
  @throws XMPPErrorException
  @throws NotConnectedException
  @throws InterruptedException