}

    @Override
    protected boolean isSameNodeType(FileSystemNode node) {
        node instanceof PartialDirectoryNode
    }

    @Override
    boolean isAllowEmptyChildren() {
        return true
    }

    def "invalidate #vfsSpec.searchedPath removes child #vfsSpec.selectedChildPath (#vfsSpec)"() {
        setupTest(vfsSpec)

        when:

    }

    @Override
    protected boolean isSameNodeType(FileSystemNode node) {
        return node instanceof UnknownFileSystemNode
    }

    @Override
    boolean isAllowEmptyChildren() {
        return false
    }

    def "invalidate #vfsSpec.searchedPath removes child #vfsSpec.selectedChildPath (#vfsSpec)"() {
        setupTest(vfsSpec)

        when:

    abstract protected boolean isSameNodeType(FileSystemNode node)

    abstract boolean isAllowEmptyChildren()

    def "invalidate child with no common pathToParent has no effect (#vfsSpec)"() {
        setupTest(vfsSpec)

        expect: