Manual server side sorting with multi-sort

[Filipsi]

How would I go about implementing multi-sort with manual sorting enabled?

As I understand it, I can't use built-in getToggleSortingHandler or toggleSorting column methods and have to write my own logic.

This is because state provided by onSortingChange handler does not take multi-sort events into account when manual sorting is enabled. And I cannot determinate if the state change is from multi-sort event, since the only provided parameter is the updaterFn.
This prevents me from choosing if I want to persist the state change fully or partially in my handler outside of the table.

Is this the correct approach or am I missing something?