BSONObj CommandHelpers::filterCommandReplyForPassthrough(const BSONObj& cmdObj) {
    BSONObjBuilder bob;
    filterCommandReplyForPassthrough(cmdObj, &bob);
    return bob.obj();
}
BSONObj CommandHelpers::filterCommandReplyForPassthrough(const BSONObj& cmdObj) {
    BSONObjBuilder bob;
    filterCommandReplyForPassthrough(cmdObj, &bob);
    return bob.obj();
}