code: func (b *BigIP) CreateSelfIP(name, address, vlan string) error {
  	config := &SelfIP{
  		Name:    name,
  		Address: address,
  		Vlan:    vlan,
  	}
  
  	return b.post(config, uriNet, uriSelf)
  }
docs: // CreateSelfIP adds a new self IP to the BIG-IP system. For <address>, you
  // must include the subnet mask in CIDR notation, i.e.: "10.1.1.1/24".