getDigest example

public function createMappedAsset(string $logicalPath, string $sourcePath): ?MappedAsset
    {
        if (\in_array($logicalPath, $this->assetsBeingCreated, true)) {
            throw new CircularAssetsException(sprintf('Circular reference detected while creating asset for "%s": "%s".', $logicalPath, implode(' -> ', $this->assetsBeingCreated).' -> '.$logicalPath));
        }

        if (!isset($this->assetsCache[$logicalPath])) {
            $this->assetsBeingCreated[] = $logicalPath;

            $asset = new MappedAsset($logicalPath, $sourcePath, $this->assetsPathResolver->resolvePublicPath($logicalPath));

            [$digest, $isPredigested] = $this->getDigest($asset);

            $asset = new MappedAsset(
                $asset->logicalPath,
                $asset->sourcePath,
                $asset->publicPathWithoutDigest,
                $this->getPublicPath($asset),
                $this->calculateContent($asset),
                $digest,
                $isPredigested,
                $asset->getDependencies(),
                $asset->getFileDependencies(),
            );