import java.util.Deque;
import java.util.function.Consumer;

/**
 * A {@link DirectorySnapshotBuilder} that tracks whether a directory has been filtered.
 *
 * You can mark a directory as filtered by {@link #markCurrentLevelAsFiltered()}.
 * When you do that, all the parent levels are marked as filtered as well.
 * On {@link #leaveDirectory()}, the {@code unfilteredSnapshotConsumer} will receive the direct child snapshots