message: Add a comment mentioning the potential for an exception.
diff: @@ -312,7 +312,7 @@ Subscription subscribe(Results const& results, util::Optional<std::string> user_
  if (!sync_config || !sync_config->is_partial)
  throw std::logic_error("A partial sync query can only be registered in a partially synced Realm");
  - auto query = results.get_query().get_description();
  + auto query = results.get_query().get_description(); // Throws if the query cannot be serialized.
  std::string name = user_provided_name ? std::move(*user_provided_name) : default_name_for_query(query,results.get_object_type());
  Subscription subscription(name, results.get_object_type(), realm);
  