src/FrontendIntegration/HybridFilterBlock.php
private function getFilterUrlBuilder(): FilterUrlBuilder
    {
        if (null === $this->filterUrlBuilder) {
            return $this->filterUrlBuilder = System::getContainer()->get('metamodels.filter_url');
        }

        return $this->filterUrlBuilder;
    }
private function getFilterUrlBuilder(): FilterUrlBuilder
    {
        if (null === $this->filterUrlBuilder) {
            return $this->filterUrlBuilder = System::getContainer()->get('metamodels.filter_url');
        }

        return $this->filterUrlBuilder;
    }
Obtain the filter URL builder.

@return FilterUrlBuilder