Method Error

src/consensus/validation.h:113–119

        return false;
    }
    bool Error(const std::string& reject_reason)
    {
        if (m_mode == ModeState::M_VALID)
            m_reject_reason = reject_reason;
        m_mode = ModeState::M_ERROR;
        return false;
    }
    bool IsValid() const { return m_mode == ModeState::M_VALID; }
    bool IsInvalid() const { return m_mode == ModeState::M_INVALID; }
    bool IsError() const { return m_mode == ModeState::M_ERROR; }