Nextras\Orm\Collection\EntityContainer::getPreloadValues PHP Method

    public function getPreloadValues($property)
    {
        if (isset($this->preloadCache[$property])) {
            return $this->preloadCache[$property];
        }
        $values = [];
        foreach ($this->data as $entity) {
            $values[] = $entity->getRawValue($property);
        }
        return $this->preloadCache[$property] = $values;
    }