Method is_code

src/msg/DispatchQueue.h:52–54

    explicit QueueItem(const ceph::ref_t<Message>& m) : type(-1), con(0), m(m) {}
    QueueItem(int type, Connection *con) : type(type), con(con), m(0) {}
    bool is_code() const {
      return type != -1;
    }
    int get_code () const {
      ceph_assert(is_code());
      return type;