ImplicitThreadMgr is a read-only Boolean property that indicates if
ThreadMgr was created as as result of the server becoming
Active. ImplicitThreadMgr will contain True when an object instance is assigned during creation and activation of the listening thread for the server. ImplicitThreadMgr will contain False when the
ThreadMgr has been expressedly assigned by the application.
ImplicitThreadMgr is also used when the serve becomes inactive to determine if the object instance must free the resources allocated in ThreadMgr prior to stopping the server.