### Question:
NodeService { public List<String> getChildren(String cluster, String path) throws ShepherException { List<String> children = nodeDAO.getChildren(cluster, path); Collections.sort(children); return children; }  List<String> getChildren(String cluster, String path); String getData(String cluster, String path); Stat getStat(String cluster, String path); Stat getStat(String cluster, String path, boolean returnNullIfPathNotExists); void create(String cluster, String path, String data, String creator); void create(String cluster, String path, String data, String creator, boolean createParents); void createEphemeral(String cluster, String path, String data, String creator); void updateWithPermission(String cluster, String path, String data, String creator); void update(String cluster, String path, String data, String creator); void delete(String cluster, String path, String creator);  }### Answer:
@Test public void testGetChildren() throws Exception { List<String> children = nodeService.getChildren("local_test", "/test"); Assert.assertNotNull(children); Assert.assertEquals(0, children.size()); }