concept JuiceStrategy extends G22TradingStrategy {
  Juicer prototypeJuicer;
  
  void reset {
    resetFields(this, fieldsToReset());
    change();
  }
  
  selfType emptyClone() {
    JuiceStrategy clone = cast super.emptyClone();
    clone.prototypeJuicer(prototypeJuicer?.fullClone());
    ret clone;
  }
  
  
}