Checking action status of a fb object
===

Given the following call to post an action on an object, what is the code to determine whether a user has taken the action for said object? Switching "post" to "get" pulls all the user's actions (not just for the current obj), and replacing the first argument with the object's URL throws an error.

                FB.api('/me/namespace:action', 'post', likeOpts, 
                function(response) {
                    if (!response || response.error) {
						console.log(response.error);
                    } else {
                        // success
                    }
                });