Values.ExpenseGroupPropertySourceShows the group that a certain key belongs to. This helps differentiate between names and addresses for different organizations, that can be hard to determine via JSON response.
type nonrec t = {types : StringList.t option;Informs you on whether the expense group is a name or an address.
*)id : String_.t option;Provides a group Id number, which will be the same for each in the group.
*)}