use jsonrpc_stdio_server::jsonrpc_core::*;
use jsonrpc_stdio_server::ServerBuilder;
#[tokio::main]
async fn main() {
let mut io = IoHandler::default();
io.add_sync_method("say_hello", |_params| Ok(Value::String("hello".to_owned())));
let server = ServerBuilder::new(io).build();
server.await;
}