langchain/vectorstores/opensearch_vector_search.py/OpenSearchVectorSearch/__init__
class OpenSearchVectorSearch:    def __init__(
        self,
        opensearch_url: str,
        index_name: str,
        embedding_function: Embeddings,
        **kwargs: Any,
    ):
        """Initialize with necessary components."""
        self.embedding_function = embedding_function
        self.index_name = index_name
        self.client = _get_opensearch_client(opensearch_url, **kwargs)