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: finland.rs
    path of file: ./repos/RustQuant/src/time/countries/europe
    
    the code of the file until where you have to start completion: // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
// RustQuant: A Rust library for quantitative finance tools.
// Copyright (C) 2022-2024 https://github.com/avhz
// Dual licensed under Apache 2.0 and MIT.
// See:
//      - LICENSE-APACHE.md
//      - LICENSE-MIT.md

    
    fn is_holiday(&self, date: Date) -> bool {
        let (_y, m, d, wd, yd, em) = unpack_date(date, false);

        if (
            // New Year's Day
            (d == 1 && m == Month::January)
            // Epiphany
            || (d == 6 && m == Month::January)
            // Good Friday
            || (yd == em-3)
            // Easter Monday
            || (yd == em)
            // Ascension Thursday
            || (yd == em+38)
            // Labour Day
            || (d == 1 && m == Month::May)
            // Midsummer Eve (Friday between June 18-24)
            || (wd == Weekday::Friday && (18..=24).contains(&d) && m == Month::June)
            // Independence Day
            || (d == 6 && m == Month::December)
            // Christmas Eve
            || (d == 24 && m == Month::December)
            // Christmas
            || (d == 25 && m == Month::December)
            // Boxing Day
            || (d == 26 && m == Month::December)
        ) {
            return true;
        }

        false
    }