Company nestC = c.localInstanceIn(nested);
Employee e = (Employee) EOUtilities.createAndInsertInstance(nested, Employee.ENTITY_NAME);
e.setFirstName("First");
e.setLastName("Last");
e.setManager(Boolean.FALSE);
e.addObjectToBothSidesOfRelationshipWithKey(nestC, Employee.COMPANY_KEY);
nested.saveChanges();
ec.saveChanges();
System.gc();
c.delete();
ec.saveChanges();