docs: function() {
          if (this._isShuttingDown) {
              return;
          }
          this._isShuttingDown = true;
  
          // Restart but wait a bit to log things.
          // -R - restart
          // -C - shutdown message
          // -T 0 - shutdown now
          // -F - don't wait for anything to shut down gracefully
          var winCmd = 'shutdown -R -T 0 -F -C "ampm restart"';
          var macCmd = 'shutdown -r now';
          var cmd = process.platform === 'win32' ? winCmd : macCmd;
          setTimeout(child_process.exec(cmd), 3000);
      }