@objc public class GlobalVariables : NSObject{

    // These are the properties you can store in your singleton
    @objc public var ItemsNoOrderFromDB = [RecallItem]()
    @objc public var groups = [RecallGroup]()
    ...
    @objc public var user = UserInfo() //will also load in from Local

    @objc public class var sharedManager: GlobalVariables {
        struct Static {
            static let instance = GlobalVariables()
        }
        return Static.instance
    }
}