kmlLayerData.docs[0].gpolygons[0].Contains is not a function

[vikasebizon]

Hello Support,
I have multiple kml so i parse kml filelike this :-

var kmlLayer new geoXML3.parser ({
map: map,
singleInfoWindow: false,
infoWindow: infowindow,
suppressInfoWindows: true,
zoom : false,
locationslot: tmpltkml,
afterParse: useTheData
});
kmlLayer.parse(locations[i][14]);
kmlLayers.push(kmlLayer);

All kml loaded on map successfully. After that on search button i am finding that my location within KML polygon or not, but i am getting error " kmlLayerData.docs[0].gpolygons[0].Contains is not a function"

My code is :-
find_closest_kml:function (lat,lng,map) {
var point = new google.maps.LatLng(lat,lng);
if(kmlLayers.length){
kmlLayers.forEach(function(kmlLayerData){
for (var k=0; k < kmlLayerData.docs[0].gpolygons.length; k++) {
console.log(kmlLayerData.docs[0].gpolygons[k].Contains(point));
}
});
}
}

Please help.