private function deletePostMeta()
{
$this->storage->delete(EntityUtils::preparePostMeta(self::$vpId, self::$postVpId));
$this->postStorage->delete(EntityUtils::preparePost(self::$postVpId));
$this->postStorage->delete(EntityUtils::preparePost(self::$post2VpId));
$this->userStorage->delete(EntityUtils::prepareUser(self::$authorVpId));
return [['vp_id' => self::$authorVpId, 'parent' => self::$authorVpId], ['vp_id' => self::$postVpId, 'parent' => self::$postVpId], ['vp_id' => self::$post2VpId, 'parent' => self::$post2VpId], ['vp_id' => self::$vpId, 'parent' => self::$postVpId]];
}