I think that makes a lot of sense, but a formal definition type might be better if you go that route though. A `BlockDeviceMapping` object would be a lot cleaner than a simple `Map<String, String>`.
Either way, I think I'll wait for a decision from you before I update the PR any further. --- Reply to this email directly or view it on GitHub: https://github.com/jclouds/jclouds/pull/626#issuecomment-67781978
