use std::str::FromStr; #[cfg(feature = "async-client")]use gix::protocol::transport::client::async_io as io_mode;#[cfg(feature = "blocking-client")]use gix::protocol::transport::client::blocking_io as io_mode; #[derive(Default, Clone, Eq, PartialEq, Debug)]pub enum Protocol {    V1,    #[default]    V2,} impl FromStr for Protocol {    type Err = String;     fn from_str(s: &str) -> Result<Self, Self::Err> {        Ok(match s {            "1" => Protocol::V1,            "2" => Protocol::V2,            _ => return Err(format!("Unsupported protocol version '{s}', choose '1' or '2'")),        })    }} #[cfg(any(feature = "blocking-client", feature = "async-client"))]mod impls {    use gix::protocol::transport;     use super::Protocol;     impl From<Protocol> for transport::Protocol {        fn from(v: Protocol) -> Self {            match v {                Protocol::V1 => transport::Protocol::V1,                Protocol::V2 => transport::Protocol::V2,            }        }    }} #[cfg(any(feature = "async-client", feature = "blocking-client"))]#[gix::protocol::bisync::bisync]pub async fn connect<Url, E>(    url: Url,    options: io_mode::connect::Options,) -> Result<gix::protocol::SendFlushOnDrop<Box<dyn io_mode::Transport + Send>>, io_mode::connect::Error>where    Url: TryInto<gix::url::Url, Error = E>,    gix::url::parse::Error: From<E>,{    Ok(gix::protocol::SendFlushOnDrop::new(        io_mode::connect::connect(url, options).await?,        false,    ))}