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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def getMaintenanceTypes(self):
 """ Return the current list of maintenance types """

        types = [('Preventive',safe_unicode(_('Preventive')).encode('utf-8')),
                 ('Repair', safe_unicode(_('Repair')).encode('utf-8')),
                 ('Enhancement', safe_unicode(_('Enhancement')).encode('utf-8'))]
        return DisplayList(types)