    @Test
    public void testImportTree() throws Exception {

        Path dirSample = Files.createTempDirectory("sample");
        JkPathTree tree = JkPathTree.of(dirSample);
        tree.importTree(JkPathTree.ofZip(createSampleZip()));
        assertTrue(Files.isDirectory(tree.get("subfolder")));
        assertTrue(Files.isRegularFile(tree.get("subfolder").resolve("sample.txt")));
        assertTrue(Files.isDirectory(tree.get("emptyfolder")));
    }