public void createInheritedObjects(PersistenceManager pm){
Employee employee1 = new Employee("Herve Landry", 42.4, "Tetra Pack");
Employee employee2 = new Employee("Vincent Racado", 59, "Tetra Pack");
Department dept = new Department("Production");
Worker worker1 = new Worker("Caroline Bret", 33, "Tetra Pack", true, dept);
Worker worker2 = new Worker("Evelyne Jain", 54, "Tetra Pack", false, dept);
Worker worker3 = new Worker("Tim Jorge", 28, "Tetra Pack", false, dept);