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: details.rs
    path of file: ./repos/rust-public-ip/examples
    
    the code of the file until where you have to start completion: use std::any::Any;

use public_ip::{dns, http, Version};

#[tokio::main]
async fn main() {
    // List of resolvers to try and get an IP address from.
    let resolver = &[http::HTTP_IPIFY_ORG, dns::GOOGLE];
    // Attempt to get an IP address and print it.
    if let Some((addr, details)) = public_ip::addr_with_details(resolver, Version::Any).await {
        // Downcast the HTTP details (if the resolution was from a HTTP resolver).
        if let Some(details) = <dyn Any>::downcast_ref::<http::Details>(details.as_ref()) {
            println!(
                "public ip address {:?} resolved from {} ({:?})",
                addr,
       
    
async fn main() {
    // List of resolvers to try and get an IP address from.
    let resolver = &[http::HTTP_IPIFY_ORG, dns::GOOGLE];
    // Attempt to get an IP address and print it.
    if let Some((addr, details)) = public_ip::addr_with_details(resolver, Version::Any).await {
        // Downcast the HTTP details (if the resolution was from a HTTP resolver).
        if let Some(details) = <dyn Any>::downcast_ref::<http::Details>(details.as_ref()) {
            println!(
                "public ip address {:?} resolved from {} ({:?})",
                addr,
                details.uri(),
                details.server(),
            );
        }
        // Downcast the DNS details (if the resolution was from a DNS resolver).
        if let Some(details) = <dyn Any>::downcast_ref::<dns::Details>(details.as_ref()) {
            println!(
                "public ip address {:?} resolved from {} ({:?})",
                addr,
                details.name(),
                details.server(),
            );
        }
    } else {
        println!("couldn't get an IP address");
    }
}