does any one know how to check if the called ui (custom) has also options inputed or using the defaults?

for example:

$('#selector').myUI();//does not have options.
$('#selector').myUI({option:'foo',{op:'bar'}});//ui has options.
$('#selector').myUI('value');//ui has options.

so if i was on:

(function($) {
$.widget("ui.myUI", {
   options = this.options;
   //check if options have been entered or the default values have been used?
})

});

Hope that i am not 2 confusing :)

thnks