code: func (r Network_Subnet_IpAddress_Global) GetBillingItem() (resp datatypes.Billing_Item_Network_Subnet_IpAddress_Global, err error) {
  	err = r.Session.DoRequest("SoftLayer_Network_Subnet_IpAddress_Global", "getBillingItem", nil, &r.Options, &resp)
  	return
  }
docs: // Retrieve The billing item for this Global IP.