ISetWriter ambSublist = VF.setWriter(Factory.Tree);
for(int i = alternatives.size() - 1; i >= 0; --i){
ambSublist.insert(alternatives.get(i));
}
return VF.constructor(Factory.Tree_Amb, ambSublist.done());
}
public IConstructor createAmbiguityNode(ArrayList<IConstructor> alternatives){
return buildAmbiguityNode(alternatives);
}