private function processListResponse()
    {
        /** @var ListDocumentsResponse $obj_list_response */
        $obj_list_response = $this->obj_last_response;
        $obj_response = (object)[
            'status' => $this->describeStatusCode($obj_list_response->getStatus()->getCode()),
            'count' => $obj_list_response->getDocumentSize(),
            'docs' => []
        ];
        $obj_mapper = new Mapper();
        foreach($obj_list_response->getDocumentList() as $obj_document) {
            $obj_doc = $obj_mapper->fromGoogle($obj_document);
            $obj_response->docs[] = $obj_doc;
        }
        return $obj_response;
    }