Make offsetToJson private

Author: aednlaxer

packages/google_maps_flutter/google_maps_flutter_platform_interface/lib/src/types/advanced_marker.dart

@@ -98,7 +98,7 @@ class AdvancedMarker extends Marker {
 
     addIfPresent('markerId', markerId.value);
     addIfPresent('alpha', alpha);
-    addIfPresent('anchor', offsetToJson(anchor));
+    addIfPresent('anchor', _offsetToJson(anchor));
     addIfPresent('consumeTapEvents', consumeTapEvents);
     addIfPresent('draggable', draggable);
     addIfPresent('flat', flat);
@@ -168,3 +168,8 @@ enum MarkerCollisionBehavior {
   /// the marker.
   requiredAndHidesOptional,
 }
+
+/// Convert [Offset] to JSON object.
+Object _offsetToJson(Offset offset) {
+  return <Object>[offset.dx, offset.dy];
+}

packages/google_maps_flutter/google_maps_flutter_platform_interface/lib/src/types/marker.dart

@@ -10,7 +10,7 @@ import 'package:flutter/foundation.dart'
 import 'types.dart';
 
 /// Convert [Offset] to JSON object.
-Object offsetToJson(Offset offset) {
+Object _offsetToJson(Offset offset) {
   return <Object>[offset.dx, offset.dy];
 }
 
@@ -77,7 +77,7 @@ class InfoWindow {
 
     addIfPresent('title', title);
     addIfPresent('snippet', snippet);
-    addIfPresent('anchor', offsetToJson(anchor));
+    addIfPresent('anchor', _offsetToJson(anchor));
 
     return json;
   }
@@ -295,7 +295,7 @@ class Marker implements MapsObject<Marker> {
 
     addIfPresent('markerId', markerId.value);
     addIfPresent('alpha', alpha);
-    addIfPresent('anchor', offsetToJson(anchor));
+    addIfPresent('anchor', _offsetToJson(anchor));
     addIfPresent('consumeTapEvents', consumeTapEvents);
     addIfPresent('draggable', draggable);
     addIfPresent('flat', flat);