import java.util.HashMap;
import java.util.Map;
import java.util.Optional;
import java.util.function.Supplier;

public class SnapshotUtil {

    public static Map<String, FileSystemLocationSnapshot> indexByAbsolutePath(FileSystemSnapshot snapshot) {
        HashMap<String, FileSystemLocationSnapshot> index = new HashMap<>();
        snapshot.accept(entrySnapshot -> {
            index.put(entrySnapshot.getAbsolutePath(), entrySnapshot);