Inserts a non-pinned page at position.
It's an error to try to insert a page before a pinned page, in that case adw.tab_view.TabView.insertPinned should be used instead.
a widget to add
the position to add child at, starting from 0
the page object representing child
Inserts a non-pinned page at position.
It's an error to try to insert a page before a pinned page, in that case adw.tab_view.TabView.insertPinned should be used instead.