Declare interface for cost methods

Procedure

In Studio, open the cost entity. For Golf Cart, open GOCost.eti entity in configuration > config > extensions > entity.

Declare the interface.

For Golf Cart, add the GOCostMethods interface by adding an implementsInterface element to GOCost with the following properties:

Property	Value
iface	`gw.lob.go.financials.GOCostMethods`
impl	`gw.lob.go.financials.GenericGOCostMethodsImpl`