(err: any) => {
     if (err instanceof HttpErrorResponse) {
         if (err.status === 401) {
             if (this.principal.isAuthenticated()) {
                 this.principal.authenticate(null);
                 this.loginModalService.open();
             } else {
                 this.loginService.logout();
                 this.router.navigate(['/']);
             }
         }
     }
 }

 @Input()
 set jhiHasAnyAuthority(value: string | string[]) {
     this.authorities = typeof value === 'string' ? [value] : value;
     this.updateView();
     // Get notified each time authentication state changes.
     this.principal.getAuthenticationState().subscribe(identity => this.updateView());
 }

 private updateView(): void {
     this.principal.hasAnyAuthority(this.authorities).then(result => {
         this.viewContainerRef.clear();
         if (result) {
             this.viewContainerRef.createEmbeddedView(this.templateRef);
         }
     });
 }

 logout() {
     this.authServerProvider.logout().subscribe();
     this.principal.authenticate(null);
 }

 (data) => {
     this.principal.identity(true).then((account) => {
         resolve(data);
     });
     return cb();
 },