concept JuiceStrategy1 extends JuiceStrategy {
  settableWithVar double profitLevel1;
  settableWithVar double keepPercentage1;
  settableWithVar double profitLevel2;
  settableWithVar double keepPercentage2;
  settableWithVar double profitLevel3;
  settableWithVar double keepPercentage3;
  
  AbstractJuicer makeJuicer() {
  }
}