code: func (r Network_Application_Delivery_Controller) GetBillingItem() (resp datatypes.Billing_Item_Network_Application_Delivery_Controller, err error) {
  	err = r.Session.DoRequest("SoftLayer_Network_Application_Delivery_Controller", "getBillingItem", nil, &r.Options, &resp)
  	return
  }
docs: // Retrieve The billing item for a Application Delivery Controller.