code: public boolean stop() {
          if (!this.isTailing.get()) {
              LogWatchTailingManager.LOGGER.debug("Tailer not running, therefore not terminating.");
              return false;
          }
          /*
           * terminate tailer; we stop the scheduler and the task will therefore
           * never be started again
           */
          this.tailer.stop();
          LogWatchTailingManager.LOGGER.info("Terminated tailing #{} for {}.",
                  this.numberOfTimesThatTailerWasStarted.get(), this.watch);
          return true;
      }
docs: Stop the tailer thread, preventing any {@link Follower}s from receiving
  {@link Message}s.
  
  @return True if stopped, false if never running.