def add_header(self, name, value):
        self._headers.setdefault(_hkey(name), []).append(str(value))
Refresh security group rules from data store
dataset/ETHPy150Open adampresley/bottlepy-bootstrap/app/bottle.py/BaseResponse.add_header--crossover with--dataset/ETHPy150Open nii-cloud/dodai-compute/nova/virt/libvirt/firewall.py/FirewallDriver.refresh_security_group_rules