code: def _validate_config(config_path):
      '''
      Validate that the configuration file exists and is readable.
  
      :param str config_path: The path to the configuration file for the aptly instance.
  
      :return: None
      :rtype: None
      '''
      log.debug('Checking configuration file: %s', config_path)
  
      if not os.path.isfile(config_path):
          message = 'Unable to get configuration file: {}'.format(config_path)
          log.error(message)
          raise SaltInvocationError(message)
      log.debug('Found configuration file: %s', config_pathf _validate_config(config_path):
      '''
      Validate that the configuration file exists and is readable.
  
      :param str config_path: The path to the configuration file for the aptly instance.
  
      :return: None
      :rtype: None
      '''
      log.debug('Checking configuration file: %s', config_path)
  
      if not os.path.isfile(config_path):
          message = 'Unable to get configuration file: {}'.format(config_path)
          log.error(message)
          raise SaltInvocationError(message)
      log.debug('Found configuration file: %s', config_path)
docs: Validate that the configuration file exists and is readable.
  
      :param str config_path: The path to the configuration file for the aptly instance.
  
      :return: None
      :rtype: None