Method clearActiveTask

libminifi/include/core/Processor.h:183–185

      active_tasks_--;
  }
  void clearActiveTask(void) {
    active_tasks_ = 0;
  }
  // Yield based on the yield period
  void yield() override {
    yield_expiration_ = (utils::timeutils::getTimeMillis() + yield_period_msec_);