code: func (g *Cloud) DeleteFirewall(name string) error {
  	ctx, cancel := cloud.ContextWithCallTimeout()
  	defer cancel()
  
  	mc := newFirewallMetricContext("delete")
  	return mc.Observe(g.c.Firewalls().Delete(ctx, meta.GlobalKey(name)))
  }
docs: // DeleteFirewall deletes the given firewall rule.