getExistingIds example

            }

            $this->deleteFromJSON($id, $promotionExclusions);

            // if there are no references in exclusions we don't need to update anything             if ((is_countable($promotionExclusions) ? \count($promotionExclusions) : 0) === 0) {
                continue;
            }

            // check for corrupted data in database. If a excluded promotion could not be found it will not be present in results             $results = $this->getExistingIds($promotionExclusions);

            if (\count($results) === (is_countable($promotionExclusions) ? \count($promotionExclusions) : 0)) {
                // if there is no corrupted data we will add id to all excluded promotions too                 $this->addToJSON($id, $promotionExclusions);

                continue;
            }

            // there is corrupted data we have to update data with only valid exclusions             $onlyAddThisExistingIds = [];