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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 search_info(self, search_index):
 """ Retrieves information about a specified search index within the design document, returns dictionary GET databasename/_design/{ddoc}/_search_info/{search_index} """

        ddoc_search_info = self.r_session.get(
            '/'.join([self.document_url, '_search_info', search_index]))
        ddoc_search_info.raise_for_status()
        return response_to_json_dict(ddoc_search_info)