code: func (api *API) ConnectZoneRailgun(zoneID, railgunID string) (ZoneRailgun, error) {
  	return api.connectZoneRailgun(zoneID, railgunID, true)
  }
docs: // ConnectZoneRailgun connects a Railgun for a given zone.
  //
  // API reference: https://api.cloudflare.com/#railguns-for-a-zone-connect-or-disconnect-a-railgun