pub trait SignerPort: Send + Sync {
// Required methods
fn handle_message<'life0, 'async_trait>(
&'life0 self,
message: Vec<u8>,
) -> Pin<Box<dyn Future<Output = ClientResult<Vec<u8>>> + Send + 'async_trait>>
where Self: 'async_trait,
'life0: 'async_trait;
fn is_ready(&self) -> bool;
}