Google map MY_LOCATION_BUTTON_CLICK

Ionic Native
1

I am using “@ionic-native/google-maps”: “^4.9.1”.
How will i use MY_LOCATION_BUTTON_CLICK
like below code

this.map.addEventListener(GoogleMapsEvent.MY_LOCATION_BUTTON_CLICK, function() {
	  alert("The my location button is clicked.");
	});

But here addEventListener error shows.
see screenshot gogole map mylocation button.
Screenshot_2018-08-17_150859

2