Preventing Popover Dismissal When Tapping Outside (Swift)

In swift 3, ios 10

After implementing UIPopoverPresentationControllerDelegate the following function seems to do the trick.

func popoverPresentationControllerShouldDismissPopover(_ popoverPresentationController: UIPopoverPresentationController) -> Bool {
    return false
}

I hope this helps if anyone is still looking for a solution.