Multi-page with subpage Flyout menu

[prabhavmehra]

I wanted to build a settings UI like we see for the "Settings" app on macos. i.e. where there is a locked sidebar/flyout menu and the subsequent details page are shown. The only thing which I am unable to get it to work is having subpages as well.

For example, one of the FlyoutItemPage has a button which takes to a subpage. I want to keep showing the flyout menu on the left while I show the sub-page and a back button on the sub page to go back to the flyout item page.

• The sub page is not part of the flyout menu items ( its a sub page of one of the flyout menu page)