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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 _getMethodsVoc(self):
 """Return the registered methods as DisplayList """

        methods = api.search({
            "portal_type": "Method",
            "is_active": True
        }, "bika_setup_catalog")

        items = map(lambda m: (api.get_uid(m), api.get_title(m)), methods)
        items.sort(lambda x, y: cmp(x[1], y[1]))
        items.insert(0, ("", _("Not specified")))

        return DisplayList(list(items))