Function servers::postgres::handler::send_warning_opt

source ยท 
async fn send_warning_opt<C>(
    client: &mut C,
    query_context: QueryContextRef,
) -> PgWireResult<()>
where
    C: Sink<PgWireBackendMessage> + Unpin + Send + Sync,
    C::Error: Debug,
    PgWireError: From<<C as Sink<PgWireBackendMessage>>::Error>,