docs: public void evaluate(DoubleSolution solution) {
      double[] f = new double[getNumberOfObjectives()];
      double value = solution.getVariableValue(0) ;
  
      f[0] = value * value;
      f[1] = (value - 2.0) * (value - 2.0);
  
      solution.setObjective(0, f[0]);
      solution.setObjective(1, f[1]);
    }