text: "id": "id",  # The id field name mapping of index document.        "document": "document",  # The text field name mapping of index document.        "embedding": "embedding",  # The embedding field name mapping of index document.        "name_of_the_metadata_specified_during_search": "opensearch_metadata_field_name,=",  # The metadata field name mapping of index document, could specify multiple, The value field contains mapping name and operator, the operator would be used when executing metadata filter query.    },)# for example# settings = AlibabaCloudOpenSearchSettings(#     endpoint="ha-cn-5yd39d83c03.public.ha.aliyuncs.com",#     instance_id="ha-cn-5yd39d83c03",#     datasource_name="ha-cn-5yd39d83c03_test",#     username="this is a user name",#     password="this is a password",#     embedding_index_name="index_embedding",#     field_name_mapping={#         "id": "id",#         "document": "document",#         "embedding": "embedding",#         "metadata_a": "metadata_a,=" #The value field contains mapping name and operator, the operator would be used when executing metadata filter query#         "metadata_b": "metadata_b,>"#         "metadata_c": "metadata_c,<"#         "metadata_else": "metadata_else,="#