core:

import EDU.neu.ccs.demeter.*;
add: class Quantity {
  protected Number number;
  public Number get_number() (@ return number; @)
  public void set_number(Number new_number)
    (@ number = new_number; @)
  public constructor Quantity() (@ super(); @)
  public constructor Quantity(Number number) (@
    super();
    set_number(number);
  @)
  public static Quantity parse(java.io.Reader in)
    throws ParseException
  (@ return new Parser(in)._Quantity(); @)
  public static Quantity parse(java.io.InputStream in)
    throws ParseException
  (@ return new Parser(in)._Quantity(); @)
  public static Quantity parse(String s) (@
    try { return parse(new java.io.StringReader(s)); }
    catch (ParseException e) {
      throw new RuntimeException(e.toString());
    }
  @)
(@  void universal_trv0_bef(UniversalVisitor _v_) {
    _v_.before(this);
  }
@)
(@  void universal_trv0_aft(UniversalVisitor _v_) {
    _v_.after(this);
  }
@)
(@  void universal_trv0(UniversalVisitor _v_) {
    universal_trv0_bef(_v_);
    _v_.before_number(this, number);
    _v_.after_number(this, number);
    universal_trv0_aft(_v_);
  }
@)
(@  void toAll_ShoeOrder_trv_bef(UniversalVisitor __v0) {
    __v0.before(this);
  }
@)
(@  void toAll_ShoeOrder_trv_aft(UniversalVisitor __v0) {
    __v0.after(this);
  }
@)
(@  void toAll_ShoeOrder_trv(UniversalVisitor __v0) {
    toAll_ShoeOrder_trv_bef(__v0);
    __v0.before_number(this, number);
    __v0.after_number(this, number);
    toAll_ShoeOrder_trv_aft(__v0);
  }
@)
(@  void toAllQuantities_ShoeOrder_trv_bef(UniversalVisitor __v0) {
    __v0.before(this);
  }
@)
(@  void toAllQuantities_ShoeOrder_trv_aft(UniversalVisitor __v0) {
    __v0.after(this);
  }
@)
(@  void toAllQuantities_ShoeOrder_trv(UniversalVisitor __v0) {
    toAllQuantities_ShoeOrder_trv_bef(__v0);
    toAllQuantities_ShoeOrder_trv_aft(__v0);
  }
@)
(@  void __trav_sumWithDebugging_ShoeOrder_trv_bef(SummingVisitor __v0, TraceVisitor __v1) {
    __v0.before(this);
    __v1.before(this);
  }
@)
(@  void __trav_sumWithDebugging_ShoeOrder_trv_aft(SummingVisitor __v0, TraceVisitor __v1) {
    __v1.after(this);
  }
@)
(@  void __trav_sumWithDebugging_ShoeOrder_trv(SummingVisitor __v0, TraceVisitor __v1) {
    __trav_sumWithDebugging_ShoeOrder_trv_bef(__v0, __v1);
    __trav_sumWithDebugging_ShoeOrder_trv_aft(__v0, __v1);
  }
@)
}