'Use the Instance Group information to fill in name and id fields.
:return: id in the format of:
ZONE/instanceGroups/INSTANCEGROUPNAME
Ex: us-east1-c/instanceGroups/my-instance-group
:rtype:  ``str``'

def _gen_id(self):

    zone_name = self.instance_group.zone.name
    return ('%s/instanceGroups/%s' % (zone_name, self.instance_group.name))
