The Get(SortState) function tells us if records are currently sorted, but it does not tell us what the sort order is; i.e. what fields are being sorted by, in what order, ascending or descending, etc. It would be helpful to have a Get function that would provide us with that type of information.
Use case: A layout with subsummary parts requires a specific sort order. If a user wants to tweak the sorting, they may get the layout into a state where the subsummary parts aren't shown as they need to be. This new function would allow a developer to monitor for this situation and therefore prevent it from happening.