code: func (b *BigIP) AddInterfaceToVlan(vlan, iface string, tagged bool) error {
  	config := &VlanInterface{}
  
  	config.Name = iface
  	if tagged {
  		config.Tagged = true
  	} else {
  		config.Untagged = true
  	}
  
  	return b.put(config, uriNet, uriVlan, vlan, "interfaces")
  }
docs: // AddInterfaceToVlan associates the given interface to the specified VLAN.