/** Helper for implementing NameSource */
protected void getAllNamesAux(List<String> list) {
list.addAll(variables.keySet());
list.addAll(methods.keySet());
if (parent != null) parent.getAllNamesAux(list);
}
/**
* Implements NameSource
*
* @return all variable and method names in this and all parent namespaces
*/
public String[] getAllNames() {
List<String> list = new ArrayList<String>();
getAllNamesAux(list);
return list.toArray(new String[0]);
}