*/
public Set<Node> querySelectorAll(String selectors) throws NodeSelectorException {
Assert.notNull(selectors, "selectors is null!");
List<List<Selector>> groups;
try {
Scanner scanner = new Scanner(selectors);
groups = scanner.scan();
} catch (ScannerException e) {
throw new NodeSelectorException(e);
}
Set<Node> results = new LinkedHashSet<Node>();