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