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_tls.rs
    path of file: ./repos/suppaftp/suppaftp/src/sync_ftp/tls
    
    the code of the file until where you have to start completion: //! # Native tls
//!
//! Native tls implementation of TLS types

use std::io::Write;
use std::net::TcpStream;

use native_tls_crate::{TlsConnector, TlsStream};

use super::{
    
    fn drop(&mut self) {
        if self.ssl_shutdown {
            if let Err(err) = self.stream.shutdown() {
                error!("Failed to shutdown stream: {}", err);
            } else {
                debug!("TLS Stream shut down");
            }
        }
    }