code: func (s *ChangesService) GetDraft(changeID, revisionID, draftID string) (*CommentInfo, *Response, error) {
  	u := fmt.Sprintf("changes/%s/revisions/%s/drafts/%s", changeID, revisionID, draftID)
  	return s.getCommentInfoResponse(u)
  }
docs: // GetDraft retrieves a draft comment of a revision that belongs to the calling user.
  //
  // Gerrit API docs: https://gerrit-review.googlesource.com/Documentation/rest-api-changes.html#get-draft