void delUser(UserId user) override;
void setUserSetting(UserId userId, const QString &settingName, const QVariant &data) override;
QVariant getUserSetting(UserId userId, const QString &settingName, const QVariant &defaultData = QVariant()) override;
void delUser(UserId user) override;
void setUserSetting(UserId userId, const QString &settingName, const QVariant &data) override;
QVariant getUserSetting(UserId userId, const QString &settingName, const QVariant &defaultData = QVariant()) override;