selectAssets() {
  this.modalService
    .fromComponent(AssetPickerDialogComponent, {
        size: 'xl',
    })
    .subscribe(result => {
        if (result && result.length) {
            // ...
        }
    });
}

class AssetPickerDialogComponent implements OnInit, AfterViewInit, OnDestroy, Dialog<Asset[]> {
  assets$: Observable<GetAssetList.Items[]>;
  allTags$: Observable<TagFragment[]>;
  paginationConfig: PaginationInstance = {
        currentPage: 1,
        itemsPerPage: 25,
        totalItems: 1,
    };
  multiSelect = true;
  initialTags: string[] = [];
  resolveWith: (result?: Asset[]) => void;
  selection: Asset[] = [];
  searchTerm$ = new BehaviorSubject<string | undefined>(undefined);
  filterByTags$ = new BehaviorSubject<TagFragment[] | undefined>(undefined);
  uploading = false;
  constructor(dataService: DataService, notificationService: NotificationService)
  ngOnInit() => ;
  ngAfterViewInit() => ;
  ngOnDestroy() => void;
  pageChange(page: number) => ;
  itemsPerPageChange(itemsPerPage: number) => ;
  cancel() => ;
  select() => ;
  createAssets(files: File[]) => ;
}