public function addFacetToCollection($config = [])
{
$facetQueries = $this->getFacetQueries();
$facetType = BucketInterface::TYPE_QUERY_GROUP;
$facetField = $this->getFilterField();
$facetConfig = ['name' => $facetField, 'queries' => $facetQueries];
$productCollection = $this->getLayer()->getProductCollection();
$productCollection->addFacet($facetField, $facetType, $facetConfig);
return $this;
}