title: How do I add multiple options when opening new modal windows with NgbModal.open() method?
body: <p>I have created a ngbModal using ng-bootstrap. I would like to add multiple NgbModalOptions. ie: { size: 'lg' } and { scrollable: true }.</p>
  
  <p>I have tried writing it in one line separated by commas, it did not work. </p>
  
  <pre><code>open() {
      return this.modalService.open(content, { size: 'lg', scrollable: true });
    }
  </code></pre>
  
  <p>Argument of type '{size: "lg"; scrollable: boolean; }' is not assignable to parameter of type 'NgbModalOptions'.  Object literal may only specify known properties, and 'scrollable' does not exist in type 'NgbModalOptions'.</p>