    bool operator==(const MutateRequestRet& rhs) const {
      return downstream_address_ == rhs.downstream_address_ && internal_ == rhs.internal_ &&
             trace_reason_ == rhs.trace_reason_;
    }
    bool operator==(const MutateRequestRet& rhs) const {
      return downstream_address_ == rhs.downstream_address_ && internal_ == rhs.internal_ &&
             trace_reason_ == rhs.trace_reason_;
    }