Is it possible to post to a users feed with a share action link?

I've noticed sometimes there's a share link on some things in my feed. Is it possible to post to a users wall and attach an action link that has a share option that would create a share dialogue directly on the users feed? Something like this:

FB.ui({    method: "feed",    name: 'sometitle',    caption: 'somecaption',    description: 'some description',    link: 'http://www.facebook.com/pages/1234?sk=app_234123123',    picture: 'http://www.facebook.com/favicon.ico',    actions: [{        name: 'share',        link: '????'        }]     });