public function render()
    {
        // Massage the response from base controller subclassings of sidebar
        $items = array_map(function ($item) {

            // If a listing instance, apply defaults common to all sidebar instances
            if (is_a($item, 'Bkwld\Decoy\Fields\Listing')) {
                return $item->layout('sidebar')->parent($this->parent)->__toString();
            }

            // Anything else will be converted to a string in the next step
            return $item;
        }, array_merge($this->items, $this->ending_items));

        // Combine all listing items into a single string and return
        return array_reduce($items, function ($carry, $item) {
            return $carry.$item;
        }, '');
    }