18.104.22.168.2 Reading SearchFolderID
The client MUST read the value of the SearchFolderID subproperty from every search folder (2), as specified in [MS-OXOSRCH], in the Finder special folder. Any search folder (2) that has this subproperty is a persistent search folder (2), and the client SHOULD display the search folder (2) as such in the UI. Searches with the Finder special folder are further specified in [MS-OXOSRCH] section 22.214.171.124.2. For more details about the Finder special folder, see [MS-OXOSFLD].