Custom Links in Walker Class

Question

I am creating a custom walker class.

I need to identify the custom links that will be added to the menu from Appearace > Menu > Custom Link

so that they will have a different format to the page/post links

Any thoughts on how I can do this within walker class possibly using if statement?

something like

if (link = custom-link) {
  // Do something
}

Answer 1

Test for …

$item->object = 'custom'

This is used for custom links only. $item->object is always the post type or the item type (category for example). Not sure what happens when someone registers a custom post type named custom :)