actualization ........

 let activeTasks: Array<Observable<Action>> = [];


            // return action$.ofType(AppActions.LOAD_WIZARD_STATE_DEFERRED)
            //     .map((action: ActualizeWizardAfterAction) => {
            //         let subject = new Subject<Action>();
            //         action.observable.subscribe(subject);
            //         return {observable: subject, sessionToken: action.sessionToken};
            //     })
            //     .flatMap((action: { observable: Observable<Action>, sessionToken: string }) => {
            //         const observable: Observable<Action> = action.observable.take(1);
            //         activeTasks.push(observable);
            //
            //         const sessionToken = action.sessionToken;
            //         return observable.flatMap((a) => {
            //             if (activeTasks.length === 0) {
            //                 throw Error("Implementation error: planned tasks list is empty but currently runned this task");
            //             }
            //             if (activeTasks.length > 1) {
            //                 return Observable.empty();
            //             }
            //             return this.loadingService.getWizardState(sessionToken).map((wizardState) => AppActions.wizardStateLoaded(wizardState));
            //         }).finally(()=>{
            //             let index = activeTasks.indexOf(observable);
            //             if (index === -1) {
            //                 throw Error(".....");
            //             }
            //             activeTasks.splice(index, 1);
            //         });
            //     });