Smile\ElasticsuiteSwatches\Model\Plugin\ProductImage::getFilterArray PHP Method

    protected function getFilterArray(array $request)
    {
        $filterArray = parent::getFilterArray($request);
        $attributeCodes = $this->eavConfig->getEntityAttributeCodes(\Magento\Catalog\Model\Product::ENTITY);
        foreach ($request as $code => $value) {
            if (in_array($code, $attributeCodes)) {
                $attribute = $this->eavConfig->getAttribute(\Magento\Catalog\Model\Product::ENTITY, $code);
                if (isset($filterArray[$code]) && !is_array($filterArray[$code])) {
                    $filterArray[$code] = [$filterArray[$code]];
                }
                if ($attribute->getId() && $this->canReplaceImageWithSwatch($attribute)) {
                    $filterArray[$code][] = $this->getOptionIds($attribute, $value);
                }
            }
        }
        return $filterArray;
    }