I'm adding a button to the toolbar using

    JToolBarHelper::addNew('thing.add');

I want it to have the same effect as clicking on the following menu button:

        <menu
            view="thing"
            layout="add"
            img="class:banners"
            alt="Add thing"
            >
            Add thing
        </menu>

Is this possible? Seems like `addNew` cannot be used to use a view from another controller? I can get the button to use the method `add` from controller `thing`, but not to use view `add` from `thing`.