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: account_balance.rs
    path of file: ./repos/mmb/exchanges/serum/tests/serum
    
    the code of the file until where you have to start completion: use crate::serum::serum_builder::SerumBuilder;
use mmb_utils::cancellation_token::CancellationToken;
use mmb_utils::logger::init_logger;

#[ignore = "need solana keypair"]
#[tokio::test(flavor = "multi_thread", worker_thre
    
async fn get_balance_successfully() {
    init_logger();

    let serum_builder = SerumBuilder::build_account_0().await;

    let result = serum_builder
        .exchange
        .get_balance(CancellationToken::default())
        .await;

    log::info!("Balance: {result:?}");

    assert!(result.is_ok());
}