No-go and speed zones: Help

[luzma9999]

Hi,
I have seen that this functionality to deal with no-go and speed zones is already implemented. I have just seen in Itinero roadmap.
What code would I have to include to define a no-go polygon, to include it in the profile and finally to be able to treat it in a routerdb file?
The goal is to get a valid route between an origin and destination on the map with the "Calculate (profile, start, end)" method and to take into account no-go and speed areas. The no-go zones are forbidden and the method "Calculate" must know it to return a right route.
I would be very grateful if you could help me.

Kind regards.

Luz María.