public VRPTWMutator(double mutationProbability, double distributionIndex, RepairDoubleSolution solutionRepair, RandomGenerator<Double> randomGenerator) {
        if (mutationProbability < 0.0D) {
            throw new JMetalException("Mutation probability is negative: " + mutationProbability);
        } else if (distributionIndex < 0.0D) {
            throw new JMetalException("Distribution index is negative: " + distributionIndex);
        } else {
            this.mutationProbability = mutationProbability;
            this.distributionIndex = distributionIndex;
            this.solutionRepair = solutionRepair;
            this.randomGenerator = randomGenerator;
        }
    }