protected function makeCopyOfRelations(\Illuminate\Http\Request $request)
    {
        $newData = [];
        $data = $request->input($this->relationName, []);

        $counter = 1;
        $newKey = static::NEW_ITEM;

        foreach ($data as $key => $values) {
            $newData["{$newKey}_{$counter}"] = $values;
            $counter++;
        }

        $request->merge([$this->relationName => $newData]);
    }