initPlatform method
Implementation
@override
Future<void> initPlatform(int id) async {
_channel = MethodChannel('plugins.flutter.io/mapmyindia_maps_$id');
_channel.setMethodCallHandler(_handleMethodCall);
await _channel.invokeMethod('map#waitForMap');
_errorChannel?.setMethodCallHandler(null);
_errorChannel = null;
}