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: udev.rs
    path of file: ./repos/stratisd/src/engine/strat_engine
    
    the code of the file until where you have to start completion: // This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

//! udev-related methods
use std::{ffi::OsStr, fmt};

use crate::{
    engine::types::{DevicePath, UdevEngineDevice},
    stra
    
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        match self {
            UdevOwnership::Luks => write!(f, "LUKS encrypted block device"),
            UdevOwnership::MultipathMember => write!(f, "member of a multipath block device"),
            UdevOwnership::Stratis => write!(f, "Stratis block device"),
            UdevOwnership::Theirs => write!(f, "block device which appears to be owned"),
            UdevOwnership::Unowned => write!(f, "block device which appears to be unowned"),
        }
    }