code: func (r Network_Gateway) UnbypassVlans(vlans []datatypes.Network_Gateway_Vlan) (err error) {
  	var resp datatypes.Void
  	params := []interface{}{
  		vlans,
  	}
  	err = r.Session.DoRequest("SoftLayer_Network_Gateway", "unbypassVlans", params, &r.Options, &resp)
  	return
  }
docs: // Start the asynchronous process to unbypass the provided VLANs. The VLANs must already be attached. Any VLANs that are already unbypassed will be ignored. The status field can be checked for progress.