Sample for: Azure/azure-sdk-for-net#25929

There is main project containing Azure function that would try to override prefetch

Tests include how to override prefetch without setter but still there is a problem to allow override MessagingProvider with my custom version

To run

If you want to run this project, please configure connection string: ServiceBusCon it's used for Function1.cs to allow to see where is the problem

The expected value would returns:

I can decorate 'MessagingProvider'!

because that would means that I was able to override that provider

or... At least that I would receive:

Has {providersCount} providers,
where last is used for service bus and it's with type: CustomMessagingProvider

where providersCount can be 1 (then other provider not registered) or 2 but it must returns CustomMessagingProvider because otherwise services would use other registration