firebasePutReq method
Implementation
Future<FirebaseResponse> firebasePutReq({required String url, required String data}) async {
http.Response _res = await http.put(Uri.parse(url), headers: this.header, body: data);
if(_res.statusCode != 200) return this._error(_res.body, FirebaseResponseError.Error);
return this._parse(_res.body);
}