How to predict the stock price in the future (such as the next week)?

By default, it can only predict and backtest to the same day (trading day). How can I predict the stock price in the future (such as the next week/month)? thanks.
默认只能预测、回测到当天（交易日），请问：如何预测未来时间（比如未来一周/一月）的股价了？谢谢。

For example
These configurations are not working and it still ends on February 8th (the previous trading day).
这些配置不起作用，它仍然截止在2月8日（上一个交易日）。

"segments": {
"train": ("2020-01-01", "2023-07-31"),
"valid": ("2023-08-01", "2023-12-31"),
"test": ("2024-01-01", "2024-05-31")
}

"backtest": {
"start_time": "2024-01-01",
"end_time": "2024-02-23",
}

Start by reproducing the reported behavior with the segments and backtest configurations in the issue, checking why execution still ends on February 8. Trace the relevant prediction and backtesting entry points in Qlib, then define whether future dates require a new capability or configuration guidance and verify the expected end date.