google/google-api-ruby-client — comment on commit b6ef9b00ad41bbc7e75f0f7245c0a7226152c6da
File:  line 0
By sporkmonger:

Actually, this is probably more of a problem with the discovery service than a bug in the client. :-/

The whole point of JSON schema using '$ref' as a value is that it wouldn't be something that would typically show up as a object key in JSON.