Cache::loadDataFromCache

protected function loadDataFromCache(): void
{
	$items = $this->cache->getVars()['items'];

	if(!is_array($items))
	{
		return;
	}

	$this->pool->setItems($items);
	$this->idMap = $this->cache->getVars()['idMap'];
	$this->externalIdMap = $this->cache->getVars()['externalIdMap'];
}