code: public void blockUsers(DomainBareJid mucLightService, List<Jid> usersJids)
              throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
          HashMap<Jid, Boolean> users = new HashMap<>();
          for (Jid jid : usersJids) {
              users.put(jid, false);
          }
          sendBlockUsers(mucLightService, users);
      }
docs: Block users.
  
  @param mucLightService
  @param usersJids
  @throws NoResponseException
  @throws XMPPErrorException
  @throws NotConnectedException
  @throws InterruptedException