pub trait VirtualTcpListenerExt: VirtualTcpListener {
    // Required method
    fn accept<'life0, 'async_trait>(
        &'life0 mut self,
    ) -> Pin<Box<dyn Future<Output = Result<(Box<dyn VirtualTcpSocket + Sync>, SocketAddr)>> + Send + 'async_trait>>
       where Self: 'async_trait,
             'life0: 'async_trait;
}