For a Speculative Plan I'd like to add a comment. However, [RunCreateOptions ](https://github.com/hashicorp/go-tfe/blob/0c9b270bfaefe4576eacc08e003e42669d7fd6df/run.go#L198) doesn't provide an option. I can set a comment for [Apply](https://github.com/hashicorp/go-tfe/blob/0c9b270bfaefe4576eacc08e003e42669d7fd6df/run.go#L314) but not for Runs that are plan only.