code: func (r Network_Vlan_Firewall) GetManagementCredentials() (resp datatypes.Software_Component_Password, err error) {
  	err = r.Session.DoRequest("SoftLayer_Network_Vlan_Firewall", "getManagementCredentials", nil, &r.Options, &resp)
  	return
  }
docs: // Retrieve The credentials to log in to a firewall device. This is only present for dedicated appliances.