clear method
Removes all icon map objects from the controller and destroys visible cluster markers.
Example:
controller.clear();
print("Cleared cluster controller");
Implementation
@override
void clear() {
final _clearFfi = __lib.catchArgumentError(() => __lib.nativeLibrary.lookupFunction<
Void Function(Pointer<Void>, ),
void Function(Pointer<Void>, )
>('navigine_sdk_flutter_ClusterMapObjectController_clear'));
_clearFfi(this.ptr, );
exception.checkCallResult();
}