public function parsesItemResponse(RunnerServiceContext $context, $itemRef, $response)
    {
        if ($context instanceof QtiRunnerServiceContext) {

            /** @var TestSession $session */
            $session = $context->getTestSession();
            $currentItem  = $context->getCurrentAssessmentItemRef();
            $responses = new State();

            if ($currentItem === false) {
                $msg = "Trying to store item variables but the state of the test session is INITIAL or CLOSED.\n";
                $msg .= "Session state value: " . $session->getState() . "\n";
                $msg .= "Session ID: " . $session->getSessionId() . "\n";
                $msg .= "JSON Payload: " . mb_substr(json_encode($response), 0, 1000);
                \common_Logger::e($msg);
            }

            $filler = new \taoQtiCommon_helpers_PciVariableFiller(
                $currentItem,
                $this->getServiceManager()->get(QtiFlysystemFileManager::SERVICE_ID)
            );

            if (is_array($response)) {
                foreach ($response as $id => $responseData) {
                    try {
                        $var = $filler->fill($id, $responseData);
                        // Do not take into account QTI File placeholders.
                        if (\taoQtiCommon_helpers_Utils::isQtiFilePlaceHolder($var) === false) {
                            $responses->setVariable($var);
                        }
                    } catch (\OutOfRangeException $e) {
                        \common_Logger::d("Could not convert client-side value for variable '${id}'.");
                    } catch (\OutOfBoundsException $e) {
                        \common_Logger::d("Could not find variable with identifier '${id}' in current item.");
                    }
                }
            } else {
                \common_Logger::e('Invalid json payload');
            }

            return $responses;
        } else {
            throw new \common_exception_InvalidArgumentType(
                'QtiRunnerService',
                'storeItemResponse',
                0,
                'oat\taoQtiTest\models\runner\QtiRunnerServiceContext',
                $context
            );
        }
    }