public function initFeatureFeatureTypes($overrideExisting = true)
    {
        if (null !== $this->collFeatureFeatureTypes && !$overrideExisting) {
            return;
        }
        $this->collFeatureFeatureTypes = new ObjectCollection();
        $this->collFeatureFeatureTypes->setModel('\FeatureType\Model\FeatureFeatureType');
    }