/**
  * Format messages output
  * 
  * @param Varien_Object $command
  * @return string Message
  */
 protected function formatMessages(Varien_Object $command, $payload = null)
 {
     $messages = '';
     $messages .= PHP_EOL . ' - ' . $command->getMessage() . PHP_EOL;
     $messages .= 'INPUT: ' . $command->getCommand() . PHP_EOL;
     $messages .= 'OUTPUT: ' . print_r($command->getOutput()) . PHP_EOL . PHP_EOL;
     return $messages;
 }