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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 aggregate(self, search):
 """ Add aggregations representing the facets selected """

        for f, facet in self.facets.items():
            agg = facet.get_aggregation()
            if isinstance(agg, Bucket):
                search.aggs.bucket(f, agg)
            elif isinstance(agg, Pipeline):
                search.aggs.pipeline(f, agg)
            else:
                search.aggs.metric(f, agg)