public function initFeaturedTutorialSkills($overrideExisting = true)
    {
        if (null !== $this->collFeaturedTutorialSkills && !$overrideExisting) {
            return;
        }
        $this->collFeaturedTutorialSkills = new ObjectCollection();
        $this->collFeaturedTutorialSkills->setModel('\gossi\trixionary\model\Skill');
    }