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: native_api.rs
    path of file: ./repos/rustis/benches
    
    the code of the file until where you have to start completion: use criterion::{criterion_group, criterion_main, Bencher, Criterion};
use futures_util::Future;
use std::time::Duration;

pub fn current_thread_runtime() -> tokio::runtime::Runtime {
    let mut builder = tokio::runtime::Builder::new_current_thread();
    builder.enable_io();
  
    
fn bench_redis_simple_getsetdel_async(b: &mut Bencher) {
    use redis::{AsyncCommands, RedisError};

    let client = get_redis_client();
    let runtime = current_thread_runtime();
    let con = client.get_async_connection();
    let mut con = runtime.block_on(con).unwrap();

    b.iter(|| {
        runtime
            .block_on(async {
                let key = "test_key";
                con.set(key, 42.423456).await?;
                let _: f64 = con.get(key).await?;
                con.del(key).await?;
                Ok::<_, RedisError>(())
            })
            .unwrap()
    });
}