In the previous version of this API spec, I had misplaced the NavigationViewItemExpandingEventArgs and NavigationViewItemCollapsedEventArgs - the older versions of these classes (e.g. NavigationViewExpandingEventArgs) were still in the API details section.
I've updated the API details section to include the correct updated classes, and updated the API Notes section to reflect what these classes represent.
(Found this issue while working on docs - sorry to bring it up after merging.)
In the previous version of this API spec, I had misplaced the NavigationViewItemExpandingEventArgs and NavigationViewItemCollapsedEventArgs - the older versions of these classes (e.g. NavigationViewExpandingEventArgs) were still in the API details section.
I've updated the API details section to include the correct updated classes, and updated the API Notes section to reflect what these classes represent.
(Found this issue while working on docs - sorry to bring it up after merging.)