transform JSON obj coming from Ariane to ariane_clip3 object
        :param json_obj: the JSON obj coming from Ariane
        :return: ariane_clip3 Subnet object

def json_2_subnet(json_obj):
        """
        transform JSON obj coming from Ariane to ariane_clip3 object
        :param json_obj: the JSON obj coming from Ariane
        :return: ariane_clip3 Subnet object
        """
        LOGGER.debug("Subnet.json_2_subnet")
        return Subnet(subnetid=json_obj['subnetID'],
                      name=json_obj['subnetName'],
                      description=json_obj['subnetDescription'],
                      ip=json_obj['subnetIP'],
                      mask=json_obj['subnetMask'],
                      routing_area_id=json_obj['subnetRoutingAreaID'],
                      ip_address_ids=json_obj['subnetIPAddressesID'],
                      subnet_loc_ids=json_obj['subnetLocationsID'],
                      subnet_osi_ids=json_obj['subnetOSInstancesID'])