Hashtable items = new Hashtable();
if(o.items.size() > 0 && o.item(0) instanceof AttrDecl){
AttrDecl one = (AttrDecl) o.item(0);
for(int i=0; i<attributes.length; i++){
String attribute = attributes[i];
items.put(attribute, one.clone(attribute));
}
}
o.items = items;
}catch(CloneNotSupportedException e){
e.printStackTrace();