List teachers = department.getTeachers();
List teachers = department.getCurrentTeachers();
    protected List doSearch(HashMap searchParameters, ISuportePersistente sp)            throws ExcepcaoPersistencia {        Integer departmentId = Integer.valueOf((String) searchParameters.get("idInternal"));        IPersistentDepartment departmentDAO = sp.getIDepartamentoPersistente();        IDepartment department = (IDepartment) departmentDAO.readByOID(Department.class, departmentId);                List teachers = department.getTeachers();        return teachers;    }