/**
  * Utilize WC logger class
  *
  * @since 1.0.0
  * @version 1.0.0
  */
 public static function log($message, $start_time = null, $end_time = null)
 {
     if (empty(self::$logger)) {
         self::$logger = new WC_Logger();
     }
     $settings = get_option('woocommerce_squareconnect_settings', '');
     if (!empty($settings['logging']) && 'yes' !== $settings['logging']) {
         return;
     }
     if (!is_null($start_time)) {
         $formatted_start_time = date_i18n(get_option('date_format') . ' g:ia', $start_time);
         $end_time = is_null($end_time) ? current_time('timestamp') : $end_time;
         $formatted_end_time = date_i18n(get_option('date_format') . ' g:ia', $end_time);
         $elapsed_time = round(abs($end_time - $start_time) / 60, 2);
         $log_entry = '====Start Log ' . $formatted_start_time . '====' . "\n" . $message . "\n";
         $log_entry .= '====End Log ' . $formatted_end_time . ' (' . $elapsed_time . ')====' . "\n\n";
     } else {
         $log_entry = '====Start Log====' . "\n" . $message . "\n" . '====End Log====' . "\n\n";
     }
     self::$logger->add(self::WC_LOG_FILENAME, $log_entry);
 }