ScopedDef(String name, Occurrence occ, ScopedDef parentScope) {  super(name, occ, parentScope);
public ScopedDef() {
    ScopedDef(String name, // the scoped name              Occurrence occ, // where it's defined              ScopedDef parentScope) {    // scope containing the def        super(name, occ, parentScope);        // Create a new hashtable for fast element lookup        elements = new JavaHashtable();    }