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: vrfy.rs
    path of file: ./repos/mail-server/tests/src/smtp/inbound
    
    the code of the file until where you have to start completion: /*
 * Copyright (c) 2023 Stalwart Labs Ltd.
 *
 * This fi
    
async fn vrfy_expn() {
    let mut core = SMTP::test();

    core.shared.directories = Config::new(DIRECTORY)
        .unwrap()
        .parse_directory(&dummy_stores(), Store::default())
        .await
        .unwrap()
        .directories;
    let config = &mut core.session.config.rcpt;
    config.directory = IfBlock::new("local".to_string());

    let config = &mut core.session.config.extensions;
    config.vrfy = r#"[{if = "remote_ip = '10.0.0.1'", then = true},
    {else = false}]"#
        .parse_if();
    config.expn = r#"[{if = "remote_ip = '10.0.0.1'", then = true},
    {else = false}]"#
        .parse_if();

    // EHLO should not advertise VRFY/EXPN to 10.0.0.2
    let mut session = Session::test(core);
    session.data.remote_ip_str = "10.0.0.2".to_string();
    session.eval_session_params().await;
    session
        .ehlo("mx.foobar.org")
        .await
        .assert_not_contains("EXPN")
        .assert_not_contains("VRFY");
    session.cmd("VRFY john", "252 2.5.1").await;
    session.cmd("EXPN sales@foobar.org", "252 2.5.1").await;

    // EHLO should advertise VRFY/EXPN for 10.0.0.1
    session.data.remote_ip_str = "10.0.0.1".to_string();
    session.eval_session_params().await;
    session
        .ehlo("mx.foobar.org")
        .await
        .assert_contains("EXPN")
        .assert_contains("VRFY");

    // Successful VRFY
    session.cmd("VRFY john", "250 john@foobar.org").await;

    // Successful EXPN
    session
        .cmd("EXPN sales@foobar.org", "250")
        .await
        .assert_contains("250-john@foobar.org")
        .assert_contains("250-jane@foobar.org")
        .assert_contains("250 bill@foobar.org");

    // Non-existent VRFY
    session.cmd("VRFY robert", "550 5.1.2").await;

    // Non-existent EXPN
    session.cmd("EXPN procurement", "550 5.1.2").await;
}