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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 _stream_search(self, query):
 """Helper method for iterating over Solr search results."""

        for doc in self.solr.search(query, rows=100000000):
            if self.unique_key != "_id":
                doc["_id"] = doc.pop(self.unique_key)
            yield doc