post method Null safety

Future<Ack> post(
  1. ClientContext? ctx,
  2. Command request
)

Implementation

$async.Future<$48.Ack> post($pb.ClientContext? ctx, $43.Command request) {
  var emptyResponse = $48.Ack();
  return _client.invoke<$48.Ack>(ctx, 'CommandService', 'Post', request, emptyResponse);
}