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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 getAnalysisCategories(self):
 """Return all available analysis categories """

        bsc = api.get_tool("bika_setup_catalog")
        cats = []
        for st in bsc(portal_type="AnalysisCategory",
                      is_active=True,
                      sort_on="sortable_title"):
            cats.append((st.UID, st.Title))
        return DisplayList(cats)