/**
 * Retrieves extension list from DB
 *
 * @return array
 *
 * @since 4.0.0
 */
private function getAllExtensionsFromDB() : array
{
    $db = $this->db;
    $query = $db->getQuery(true);
    $query->select('*')->from('#__extensions');
    $db->setQuery($query);
    $extensions = $db->loadAssocList('extension_id');
    return $extensions;
}