For schema.org microdata, should a "breadcrumb" itemprop declaration include only the linked portion of a breadcrumb trail, or can it include the current page as well?

I ask because breadcrumb display often includes not only parent pages, but the current page or section as well - unlinked. E.g.:
<div><a href="/">Home</a> | About us</div>

None of the schema.org examples include this common output (see graphic attached to this post).*

So what's the correct syntax?

Thanks for any thoughts on this, coders!

*Mini-rant: It would be nice if: a) Google et al. pulled some of their examples from real-life code, rather than idealized code, so that such use cases would be exposed; b) that when providing examples in different contexts new examples were employed, rather than using the same damn examples over and over again. ;)
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