markCompleted method
Mark the link as completed This prevants it from coming up again in the next app session
Implementation
Future<bool> markCompleted() async {
assert(_appId != null, ErrorStrings.serviceUninitialized);
if (_clickId == null) return false;
final res = await _apiService.request(
method: ApiMethod.delete,
endpoint: '${ApiEndpoints.deleteClick}/$_clickId',
);
return res.success;
}