in cpp/acs_agent_helper.cc [76:87]
std::unique_ptr<Request> MakeRequestWithRegistration(std::string message_id,
std::string channel_id,
std::string resource_id) {
auto request = std::make_unique<Request>();
request->set_message_id(std::move(message_id));
google::cloud::agentcommunication::v1::RegisterConnection
registration_connection;
registration_connection.set_channel_id(std::move(channel_id));
registration_connection.set_resource_id(std::move(resource_id));
*request->mutable_register_connection() = std::move(registration_connection);
return request;
}