instance. Example address: "localhost:19530"
        uri (str): The uri of Zilliz instance. Example uri:
            "https://in03-ba4234asae.api.gcp-us-west1.zillizcloud.com",
        host (str): The host of Zilliz instance. Default at "localhost",
            PyMilvus will fill in the default host if only port is provided.
        port (str/int): The port of Zilliz instance. Default at 19530, PyMilvus
            will fill in the default port if only host is provided.
        user (str): Use which user to connect to Zilliz instance. If user and
            password are provided, we will add related header in every RPC call.
        password (str): Required when user is provided. The password
            corresponding to the user.
        token (str): API key, for serverless clusters which can be used as
            replacements for user and password.
        secure (bool): Default is false. If set to true, tls will be enabled.
        client_key_path (str): If use tls two-way authentication, need to
            write the client.key path.
        client_pem_path (str): If use tls two-way authentication, need to
            write the client.pem path.
        ca_pem_path (str): If use tls two-way authentication, need to write
            the ca.pem path.
        server_pem_path (str): If use tls one-way authentication, need to
            write the server.pem path.
        server_name (str): If use tls, need to write the common name.
    Example:
        .. code-block:: python
        from langchain.vectorstores import Zilliz
        from langchain.embeddings import OpenAIEmbeddings
        embedding = OpenAIEmbeddings()