"analysis": {"analyzer": {"stop_standard": {"type": "standard", " stopwords": "_english_"}}},
                        },
                        "mappings": {
                            "properties": {
                                "text": {
                                    "type": "text",
                                    "analyzer": "standard",
                                    "similarity": "BM25"
                                },
                            }
                        },
                    }
                    ```
        """
        self._indexes[index_name] = ElasticSearchIndex(
            host=host, port=port, es_client=es_client, es_index_name=es_index_name, es_index_config=es_index_config
        )