code: def __launchThreads(self, numThreads):
          
          i = 0
          while i < numThreads:
              self.__logger.debug("Launching thread number " +
                                  str(i))
              i += 1
              newThr = Thread(target=self.__processUsers)
              newThr.setDaemon(True)
              self.__threads.add(newThr)
              newThr.start()
docs: Launch some threads and start to process users.
  
          :param numThreads: number of thrads to launch.
          :type numThreads: int.