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: mod.rs
    path of file: ./repos/nushell/crates/nu-command/tests/commands/hash_
    
    the code of the file until where you have to start completion: use nu_test_support::{nu, pipeline};

#[test]
fn base64_defaults_t
    
fn base64_encode_characterset_binhex() {
    let actual = nu!(r#"
        echo 'username:password' | encode base64 --character-set binhex
        "#);

    assert_eq!(actual.out, "F@0NEPjJD97kE\'&bEhFZEP3");
}