You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: yubi.rs
    path of file: ./repos/ethers-rs/examples/wallets/examples
    
    the code of the file until where you have to start completion: #[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    use ethers::{prelude::*, utils::parse_ether};
    use yubihsm::{Connector, Credentials, UsbConfig};

    // Connect over websockets
    let provider = Provider::new(Ws::connect("ws://localhost:8545").await?);

    // We use USB for the example, but you can connect over HTTP as well. Refer
    // to the [YubiHSM](https://docs.rs/yubihsm/0.34.0/yubihsm/) docs for more info
    let connector = Connector::usb(&UsbConfig::default());
    // Instantiate the connection to the YubiKey. Alternatively, use the
    // `from_key` method to upload a key you already have, or the `new` method
    // to generate a new keypair.
    let wallet = YubiWallet::connect(connector, Credentials::
    
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    use ethers::{prelude::*, utils::parse_ether};
    use yubihsm::{Connector, Credentials, UsbConfig};

    // Connect over websockets
    let provider = Provider::new(Ws::connect("ws://localhost:8545").await?);

    // We use USB for the example, but you can connect over HTTP as well. Refer
    // to the [YubiHSM](https://docs.rs/yubihsm/0.34.0/yubihsm/) docs for more info
    let connector = Connector::usb(&UsbConfig::default());
    // Instantiate the connection to the YubiKey. Alternatively, use the
    // `from_key` method to upload a key you already have, or the `new` method
    // to generate a new keypair.
    let wallet = YubiWallet::connect(connector, Credentials::default(), 0);
    let client = SignerMiddleware::new(provider, wallet);

    // Create and broadcast a transaction (ENS enabled!)
    let tx = TransactionRequest::new().to("vitalik.eth").value(parse_ether(10)?);
    let pending_tx = client.send_transaction(tx, None).await?;

    // Get the receipt
    let _receipt = pending_tx.confirmations(3).await?;
    Ok(())
}