closeInvocationStreamForOwner function
Closes a registration's built-in delivery resources during owner shutdown.
Awaits override-stream cancellation and propagates its failure, but does not wait for paused application listeners to receive buffered invocations or done. This does not dispatch to a subclass override of Registered.closeInvocationStream.
Implementation
Future<void> closeInvocationStreamForOwner(Registered registered) =>
registered._closeInvocationStream(waitForListeners: false);