core:

import edu.neu.ccs.demeter.*;
add: class BasicGameStep {
  protected RelationSelection relationselection;
  public RelationSelection get_relationselection() {{ return relationselection; }}
  public void set_relationselection(RelationSelection new_relationselection)
    {{ relationselection = new_relationselection; }}
  protected FirstPlayer firstplayer;
  public FirstPlayer get_firstplayer() {{ return firstplayer; }}
  public void set_firstplayer(FirstPlayer new_firstplayer)
    {{ firstplayer = new_firstplayer; }}
  protected SecondPlayer secondplayer;
  public SecondPlayer get_secondplayer() {{ return secondplayer; }}
  public void set_secondplayer(SecondPlayer new_secondplayer)
    {{ secondplayer = new_secondplayer; }}
  protected NegOp negop;
  public NegOp get_negop() {{ return negop; }}
  public void set_negop(NegOp new_negop)
    {{ negop = new_negop; }}
  protected float payment;
  public float get_payment() {{ return payment; }}
  public void set_payment(float new_payment)
    {{ payment = new_payment; }}
  public constructor BasicGameStep() {{ super(); }}
  public constructor BasicGameStep(RelationSelection relationselection, FirstPlayer firstplayer, SecondPlayer secondplayer, NegOp negop, float payment) {{
    super();
    set_relationselection(relationselection);
    set_firstplayer(firstplayer);
    set_secondplayer(secondplayer);
    set_negop(negop);
    set_payment(payment);
  }}
  public static BasicGameStep parse(java.io.Reader in)
    throws ParseException
  {{ return new Parser(in)._BasicGameStep(); }}
  public static BasicGameStep parse(java.io.InputStream in)
    throws ParseException
  {{ return new Parser(in)._BasicGameStep(); }}
  public static BasicGameStep 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_) {
    ((UniversalVisitor) _v_).before(this);
  }
}}
{{  void universal_trv0_aft(UniversalVisitor _v_) {
    ((UniversalVisitor) _v_).after(this);
  }
}}
{{  void universal_trv0(UniversalVisitor _v_) {
    universal_trv0_bef(_v_);
    ((UniversalVisitor) _v_).before_relationselection(this, relationselection);
    relationselection.universal_trv0(_v_);
    ((UniversalVisitor) _v_).after_relationselection(this, relationselection);
    ((UniversalVisitor) _v_).before_firstplayer(this, firstplayer);
    firstplayer.universal_trv0(_v_);
    ((UniversalVisitor) _v_).after_firstplayer(this, firstplayer);
    ((UniversalVisitor) _v_).before_secondplayer(this, secondplayer);
    secondplayer.universal_trv0(_v_);
    ((UniversalVisitor) _v_).after_secondplayer(this, secondplayer);
    if (negop != null) {
      ((UniversalVisitor) _v_).before_negop(this, negop);
      negop.universal_trv0(_v_);
      ((UniversalVisitor) _v_).after_negop(this, negop);
    }
    ((UniversalVisitor) _v_).before_payment(this, payment);
    ((UniversalVisitor) _v_).after_payment(this, payment);
    universal_trv0_aft(_v_);
  }
}}
}