Hal\MutaTesting\Mutation\MutationCollection::getSurvivors PHP Метод

    public function getSurvivors()
    {
        $collection = new MutationCollection();
        foreach ($this->mutations as $mutation) {
            $unit = $mutation->getUnit();
            if (null === $unit || $unit->getNumOfFailures() == 0 && $unit->getNumOfErrors() == 0) {
                $collection->push($mutation);
            }
        }
        return $collection;
    }