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: config.rs
    path of file: ./repos/fluvio/crates/fluvio/src/producer
    
    the code of the file until where you have to start completion: use std::fmt::{Debug, Display, Formatter};
use std::str::FromStr;
use std::time::Duration;

use derive_builder::Builder;

use fluvio_future::retry::{ExponentialBackoff, FibonacciBackoff, FixedDelay};
use fluvio_spu_schema::Isolation;
use fluvio_spu_schema::server::smartmodule::SmartModuleInvocation;

use fluvio_compression::Compression;
use serde::{Seria
    
    fn default() -> Self {
        Self {
            linger: default_linger_duration(),
            batch_size: default_batch_size(),
            batch_queue_size: default_batch_queue_size(),
            partitioner: default_partitioner(),
            compression: None,
            timeout: default_timeout(),
            isolation: default_isolation(),

            #[cfg(feature = "stats")]
            stats_collect: default_stats_collect(),
            delivery_semantic: default_delivery(),
            smartmodules: vec![],
        }
    }