FunctionContext missing in TICTACTOE Demo

[orchid gull]

I'm using azure functions and following the tic tac toe demo.

I notice a pattern of using:
var context = await FunctionContext<PlayFabIdRequest>.Create(req);

In various methods calls.
When I copy this line I get errors and it looks like the demo is 6 years old. Is there any updated version?

Currently trying to call a write title event.