How to add CSS class to ng2-smart-table <td>?

Question

How do you add a CSS class to an ng2-smart-table <td> for particular column? How can I do that?

I have tried this:

this.renderer.addClass(this.el.nativeElement.children[0].children[1].children[0].children[0].children[0].children[0].children[1].getElementsByTagName('ngx-payer-name-column')[0].closest('td'), 'payer-desc-resident-shown')