How to use the react-native-restart.Restart function in react-native-restart

_handleAppStateChange = nextAppState => {
    // app going to background
    if (nextAppState === 'background') {
      this.setState({
        suspendTime: new Date()
      })
    }

    // app coming from background
    if (this.state.appState === 'background' && nextAppState === 'active') {
      const secondsFromSuspend = (new Date() - this.state.suspendTime) / 1000

      if (secondsFromSuspend > RESTART_SUSPEND_TIME) {
        console.debug('Restart called')
        RNRestart.Restart()
      }
    }

    this.setState({ appState: nextAppState })
  }

_confirmServer() {
    if(this.state.curselect.id == 3 && this.state.curselect.value == "") {
      ToastUtil.showWithMessage("請輸入服務器地址");
      return;
    }
    // debugStorage.removeAll();
    debugStorage.setData(this.state.curselect);
    ToastUtil.showWithMessage("设置成功");
    RNRestart.Restart();
  }

.then(() => {
        console.log(
          "[DatabaseSynchronizer] DB download success! Reloading app."
        );
        RNRestart.Restart();
      })
      .catch(reason => {

        onPress: () => RNRestart.Restart(),
      },

        onPress: () => RNRestart.Restart(),
      },

        onPress: () => RNRestart.Restart(),
      },

setTimeout(() => {
      RNRestart.Restart();
    }, 300);
  }

return async () => {
    audioActor().unloadAudio();

    if (locale) {
      const { setLocale, setRTL } = locale;

      await setLocaleAndRTLForReset({
        locale: setLocale,
        isRTL: setRTL,
        showWelcomeScreen: true,
      });
    } else {
      await setDefaultLocaleAndRTL();
    }

    RNRestart.Restart();
  };
}