return false;
        }
        updateWatchedDirectories(changedWatchedDirectories);
        return true;
    }

    @Override
    protected void updateWatchesOnChangedWatchedFiles(FileHierarchySet newWatchedFiles) {
        // Most of the changes already happened in `handleVirtualFileSystemContentsChanged`.
        // Here we only need to update watches for the roots of the hierarchies.