Possibility to setIcon on QHeaderView items

Would be very nice if there was an API to do something like setIcon() on QHeaderView items in eg. a QTableWidget. Googling shows that many want icons in headerview items (so do I) and various solutions are proposed, most my overriding paintSection. However, this also might require the sizeHint or the minimumSizeHint to be changed, so an API for this would for sure be much appreciated!