Closing the new "dialog" in 1.4

In 1.4, I see that the dialog widget has been deprecated in favor of the page's dialog option. I've got my markup switched over to properly use that, and they display just fine.

In 1.3, I would use $('.ui-dialog').dialog('close') in my client side script to close the dialog and return to the previous page. What's the proper equivalent in 1.4 with the new dialog model?

Thanks,