Emits a streaming progress update for LongRunning operations (no-op for Sync).
OptionalhandleOpaque handle for the backing run (e.g. a ProcessRunID), when one has been created.
The provider that owns this execution (use this for data access — never new Metadata()).
The resolved acting user for permission-scoped data work.
Server-side execution context handed to BaseRemotableOperation.ExecuteServer (and through it to
InternalExecute) when a Remote Operation runs in-process on the server. It carries everything a server implementation needs without coupling the operation to any transport.