public function saveStep(FormInterface $form)
    {
        $answers = $this->getUserConfiguration()->getAnswers();
        $data = $form->getData();
        $answersData = $form->get('answers')->getData();

        if (is_null($answersData)) {
            $answersData = array();
        } else if (!is_array($answersData)) {
            $answersData = array($answersData);
        }

        $answers[$this->getCurrentQuestion()] = array_merge($answersData, $data);
        $this->getUserConfiguration()->setAnswers($answers);
        $this->updateSessionConfiguration();

        return $this;
    }