ngOnInit(): void {
     this.loginPageStateService
         .get()
         .pipe(take(1), pluck('entity'))
         .subscribe((dotLoginUserSystemInformation: DotLoginUserSystemInformation) => {
             document.body.style.backgroundColor = dotLoginUserSystemInformation.backgroundColor || '';
             document.body.style.backgroundImage = dotLoginUserSystemInformation.backgroundPicture
                 ? `url('${dotLoginUserSystemInformation.backgroundPicture}')`
                 : '';
         });
 }
 resolve(): Observable<DotLoginInformation> {
     return this.dotLoginPageStateService.set('');
 }