Macro krpc_server

macro_rules! krpc_server {
    (
    $package:expr,
    $name:ident,
    $version:expr,
    $(async fn $method:ident (&$self:ident $(,$req:ident : $reqType:ty)* ) -> Result<$resType:ty>  { $($code:tt)* })*) => { ... };
}