getCacheFilePath example

class CachedMappedAssetFactory implements MappedAssetFactoryInterface
{
    public function __construct(
        private readonly MappedAssetFactoryInterface $innerFactory,
        private readonly string $cacheDir,
        private readonly bool $debug,
    ) {
    }

    public function createMappedAsset(string $logicalPath, string $sourcePath): ?MappedAsset
    {
        $cachePath = $this->getCacheFilePath($logicalPath, $sourcePath);
        $configCache = new ConfigCache($cachePath, $this->debug);

        if ($configCache->isFresh()) {
            return unserialize(file_get_contents($cachePath));
        }

        $mappedAsset = $this->innerFactory->createMappedAsset($logicalPath, $sourcePath);

        if (!$mappedAsset) {
            return null;
        }