/// <summary>
 /// Insert configuration value to database.
 /// </summary>
 /// <param name="columnName">Configuration column name.</param>
 /// <param name="value">New value.</param>
 private void UpdateConfigurationValue <T>(string columnName, T value)
 {
     UseDatabase(() =>
     {
         IWantToDatabase.UpdateConfiguration(columnName, value);
         _log.InfoFormat("Written Configuration '{0}' = '{1}'", columnName, value);
     });
 }