scrap method
Implementation
Future<LinkResponse> scrap(String url,
{int templateId, Map<String, String> templateArgs}) async {
var params = {
"request_url": url,
"template_id": templateId,
"template_args": templateArgs == null ? null : jsonEncode(templateArgs)
};
params.removeWhere((k, v) => v == null);
return _validate("scrap", params);
}