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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 get_containers(self):
 """Returns the available Containers of the system """

        query = dict(portal_type="Container",
                     sort_on="sortable_title",
                     sort_order="ascending",
                     is_active=True)
        results = api.search(query, "bika_setup_catalog")
        return map(api.get_object, results)