Oh, I see. Sorry, missed that on first skim.

In other places, we've been using real-but-obviously-placeholder values wherever possible (where it's user-provided value, but not one they have to look up somewhere like a username or API key). We've also tried to keep them consistent from sample to sample across languages, so it's less jarring as you flip between them. Check out the [Cloud Files metadata examples](https://github.com/rackerlabs/developer.rackspace.com/blob/master/src/docs/cloud-files/getting-started/samples/update_object_metadata.rst) to see one place we did this -- most of the languages set "some-key" to "another-value" (except PHP, apparently). It's one of the things I try to periodically sweep and touch up in finished examples.

I see the `sh` examples already picked a key here, so you could just steal theirs, as an example of what to set?