private async Task <FacebookCoreSettings> GetFacebookCoreSettingsAsync()
        {
            var settings = await _coreService.GetSettingsAsync();

            if ((await _coreService.ValidateSettingsAsync(settings)).Any(result => result != ValidationResult.Success))
            {
                _logger.LogWarning("The Facebook Core module is not correctly configured.");

                return(null);
            }

            return(settings);
        }