code: private function rebuildDwnlSnaps()
      {
          $req = new \Praxigento\Downline\Api\Service\Snap\Calc\Request();
          $this->servSnapCalc->exec($req);
      }
docs: MOBI-1026: re-build downline snaps before calculations.
  
  Clean up downline tree snaps for the last 2 days then rebuild it.
  The last day of the snap would contain incomplete information.
  
  TODO: remove it after the last day of the snap will be processed correctly.