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: networkd_status.rs
    path of file: ./repos/bottlerocket/sources/api/netdog/src
    
    the code of the file until where you have to start completion: //! The networkd_status module contains definitions and functions for tracking network status from networkd
//!
//! The primary purpose of this module is to provide structures to read in a `networkctl status` command output
//! and make specific fields available from this output. These structs can then be used to read DNS, IP Addressing
//! and any other networking status data for use in configuration files needed for other networking tools.
use crate::interface_id::InterfaceName;
use crate::
    
    fn with_search_domains_networkd_link_status() {
        let file_name = "has_search_domains_networkctl_output.json";
        let ok = networkd_config().join(file_name);
        let network_status_str = read_output_file(ok);
        let status_output: String = String::from_utf8(network_status_str.into()).unwrap();

        // Parses correctly
        let network_status_result = serde_json::from_str::<NetworkDInterfaceStatus>(&status_output);
        assert!(network_status_result.is_ok());

        // Primary address is correct for file
        let network_status = network_status_result.unwrap();
        assert_eq!(
            network_status.primary_address().unwrap(),
            Ipv4Addr::new(172, 31, 28, 92)
        );
    }