AsyncTaskWithSend<Request_T, Response_T, Message_T> typedef
AsyncTaskWithSend<Request_T, Response_T, Message_T> =
Future<Response_T?> Function(SendMessage<Message_T> sendMessage, Request_T? request)
Implementation
typedef AsyncTaskWithSend<Request_T, Response_T, Message_T>
= Future<Response_T?> Function(
SendMessage<Message_T> sendMessage,
Request_T? request,
);