Strawberryshake Observable cache expiry

[nige6]

As per the getting started section its possible to setup a client request using System.Reactive and assigning the StrawberryShake.ExecutionStrategy.CacheFirst to .Watch which will then cache the results.

The alternative is to use CacheAndNetwork but this will always send a request.

is there a way to use CacheFirst but with an expiry. so that the results could be cached for a number of seconds/minutes and if expired make a network request