Kodeine\Metable\Metable::saveMeta PHP Method

    protected function saveMeta()
    {
        foreach ($this->metaData as $meta) {
            $meta->setTable($this->metaTable);
            if ($meta->isMarkedForDeletion()) {
                $meta->delete();
                continue;
            }
            if ($meta->isDirty()) {
                // set meta and model relation id's into meta table.
                $meta->setAttribute($this->metaKeyName, $this->modelKey);
                $meta->save();
            }
        }
    }