forecasting with arima

[Anupama gv]

Hello

I am struggling with forecasting using ARIMA mode. I have estimated the appropriate model arima(1,1,1) and trying to forecast for 2040. My yearly dataset is up to 2019. what is the command for that. please help

thanks
Anupama

[George Ford]

https://www.stata.com/manuals13/tsarimapostestimation.pdf