private function logIncrementalSync($changed, $deleted)
    {
        if ($this->logger) {
            $entriesLogReducer = function ($entry) {
                return array_intersect_key($entry, array_flip($this->incrementalAttributesToLog));
            };
            $changedToLog      = array_map($entriesLogReducer, $changed);
            $deletedToLog      = array_map($entriesLogReducer, $deleted);
            $this->logger->info(
                sprintf("Incremental changeset processed. Changed: %d, Deleted: %d.", count($changed), count($deleted)),
                ['changed' => $changedToLog, 'deleted' => $deletedToLog]
            );
        }
    }