private void maybeForceBuilderInitialization() {
        if (com.google.protobuf.GeneratedMessage.alwaysUseFieldBuilders) {
          getInitFieldBuilder();
          getHandleUserJoinFieldBuilder();
          getHandleUserLeaveFieldBuilder();
          getHandleActionFieldBuilder();
          getHandleTimerFieldBuilder();
          getHandleTimerCompleteFieldBuilder();
          getSystemFieldBuilder();
        }
      }