Notifies the profiler that an application domain has been unloaded from a process.
The value of appDomainId is not valid for an information request after the ICorProfilerCallback::AppDomainShutdownStarted method returns.
Some parts of unloading the application domain might continue after the AppDomainCreationFinished callback. A failure HRESULT in hrStatus indicates a failure. However, a success HRESULT in hrStatus indicates only that the first part of unloading the application domain has succeeded.