Navigate to the previous visited page.
It is a programming error to call this function when no previous page is available.
This function is for use when creating pages of the gtk.types.AssistantPageType.Custom type.
Deprecated: This widget will be removed in GTK 5
Navigate to the previous visited page.
It is a programming error to call this function when no previous page is available.
This function is for use when creating pages of the gtk.types.AssistantPageType.Custom type.