getInsertBacklog example

$backlog = $this->getUpdateBacklog($entity);
            if (!$backlog) {
                continue;
            }
            $this->queue[] = $backlog;
        }
    }

    public function postFlush(PostFlushEventArgs $eventArgs)
    {
        foreach ($this->inserts as $entity) {
            $backlog = $this->getInsertBacklog($entity);
            if (!$backlog) {
                continue;
            }
            $this->queue[] = $backlog;
        }
        $this->inserts = [];
    }

    public function processQueue()
    {
        if (empty($this->queue)) {