How to use the expo-calendar.updateEventAsync function in expo-calendar

_updateEvent = async (event: Calendar.Event) => {
    const { calendar } = this.props.navigation.state.params!;
    if (!calendar.allowsModifications) {
      Alert.alert('This calendar does not allow modifications');
      return;
    }
    const newEvent = {
      title: 'update test',
    };
    try {
      await Calendar.updateEventAsync(event.id!, newEvent, {
        futureEvents: false,
        instanceStartDate: event.startDate,
      });
      Alert.alert('Event saved successfully');
      this._findEvents(calendar.id);
    } catch (e) {
      Alert.alert('Event not saved successfully', e.message);
    }
  }