Create Custom session and Initialize it preDispatch

[SasiKiranK]

I am unable to find dev docs for creating Custom Session and Initialize it before PreDispatch,
Like Customer session, Core Session, and Checkout Session
Thanks
Sasikiran Kesavan

[davidalger]

The GitHub issue tracker is intended for technical issues only. Please refer to the Community Forums or Magento Stack Exchange site for technical questions. In your case, the programming questions forum is likely the most appropriate. Feel free to reopen this issue if you think you have encountered a bug in Magento 2.