How can refresh the MainEntityManager after new login ?

Hi.Happy new year.

my question is about EntityManagerService.

How can refresh the MainEntityManager after new login ?
       ...my steps
       PersistenceManager  pManager = new PersistenceManager(true, "extention");
       pManager.Login(new LoginCredential("admin2", "password2", "")
       ...after success login the DefaultManager and the MainPm.Manager must look the new manager
       PersistenceManager.DefaultManager = pManager;
       MainPm.Initialize();

because the MainEntityManager hold the old PersistenceManager from the initialization.

It is the right way to remove the MainEntityManager

       EntityManagerService.RemoveEntityManager (MainEntityManager ) from the servise

and add it again
       AddNewEntityManager<MainEntityManager>(
                                   EntityManagerNames.MainEntityManager, MainPm.Manager, false);

thanks