I'm using Google Maps API. And I'm using the code below to get the coordinates of the marker.

var lat = homeMarker.getPosition().$a;

var lng = homeMarker.getPosition().ab;

Everything is working fine with the app that I built using Google Maps.
But I tested it today and I got problems getting the correct coordinates. Only to discover that the code above is getting undefined. After I console.log(homeMarker.getPosition()) I discovered that this is now the variables that they used for the coordinates.

var lat = homeMarker.getPosition().ab;

var lng = homeMarker.getPosition().cb;

I won't ask why Google Maps acts this way but you can also include it in your answer. My question is that how do I properly get the coordinates without changing my code everytime google maps changes the variables that they're using.