fetchConversation method

@override Future<Conversation> fetchConversation(String id)

Loads the full Conversation snapshot at startup.

Implementation

@override
Future<Conversation> fetchConversation(String id) async {
  _conversationId = id;
  // NOTE: deserialisation delegated to host app.
  throw UnimplementedError(
      'RestTransport.fetchConversation: provide a custom decoder.');
}