Return the infos configured for this specific prop, merging the
        different configuration level

def _get_prop_infos(self, prop):
        """
        Return the infos configured for this specific prop, merging the
        different configuration level
        """
        info_dict = self.get_info_field(prop)
        main_infos = info_dict.get('export', {}).copy()
        infos = main_infos.get(self.config_key, {})
        main_infos['label'] = self._get_title(prop, main_infos, info_dict)
        main_infos['name'] = prop.key
        main_infos['key'] = prop.key
        main_infos.update(infos)
        main_infos['__col__'] = prop
        return main_infos