doPost function
Implementation
doPost(String urlAfterBase, Map bod, {Map<String, String>? headers}) async {
var body = stripNulls(bod);
var uri = Uri.https(base, '/auto/api/$urlAfterBase');
var js = await http.post(uri, body: jsonEncode(body), headers: headers);
var decoded = jsonDecode(js.body);
return decoded;
}