import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;
import java.util.function.Supplier;

public class WatchingVirtualFileSystem extends AbstractVirtualFileSystem implements BuildLifecycleAwareVirtualFileSystem, Closeable {
    private static final Logger LOGGER = LoggerFactory.getLogger(WatchingVirtualFileSystem.class);
    private static final String FILE_WATCHING_ERROR_MESSAGE_DURING_BUILD = "Unable to watch the file system for changes";

        when:
        watchingVirtualFileSystem.updateRootUnderLock { root -> nonEmptySnapshotHierarchy }
        watchingVirtualFileSystem.afterBuildStarted(WatchMode.DISABLED, VfsLogging.NORMAL, WatchLogging.NORMAL, buildOperationRunner)
        then:
        0 * _

        watchingVirtualFileSystem.root == emptySnapshotHierarchy

        when:

import org.gradle.internal.watch.vfs.impl.FileWatchingFilter;
import org.gradle.internal.watch.vfs.impl.WatchingNotSupportedVirtualFileSystem;
import org.gradle.internal.watch.vfs.impl.WatchingVirtualFileSystem;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.io.File;
import java.util.Optional;
import java.util.function.Predicate;