onMessageReceived method

Future<String> onMessageReceived(
  1. String? channel,
  2. String? message
)

Implementation

Future<String> onMessageReceived(String? channel, String? message) {
  if (_channels[channel!] != null) {
    return _channels[channel]!(message);
  } else {
    return Future.error('No channel "$channel" was registered!');
  }
}