class CompositeCalculationFunctions implements CalculationFunctions, ImmutableBean {

  static CompositeCalculationFunctions of(CalculationFunctions functions1, CalculationFunctions functions2) {
    return new CompositeCalculationFunctions(functions1, functions2);
  }

  private  CompositeCalculationFunctions(
      CalculationFunctions functions1,
      CalculationFunctions functions2);

}