destroy method
Implementation
@override
Future<void> destroy(
{required String matchingKey, required String? bucketingKey}) async {
var handlerKey = _buildMapKey(matchingKey, bucketingKey);
_handlers[handlerKey]?.destroy();
_handlers.remove(handlerKey);
return await methodChannel.invokeMethod(
'destroy', _buildParameters(matchingKey, bucketingKey));
}