code: def warn_about_unmanaged_parameters(self):
          
          properties = self.__class__.properties
          unmanaged = []
          for prop, entry in list(properties.items()):
              if not entry.managed and hasattr(self, prop):
                  if entry.help:
                      line = "%s: %s" % (prop, entry.help)
                  else:
                      line = prop
                  unmanaged.append(line)
          if unmanaged:
              logger.warning("The following Nagios legacy parameter(s) are not currently "
                             "managed by Alignak:")
  
              for line in unmanaged:
                  logger.warning('- %s', line)
  
              logger.warning("Those are unmanaged configuration statements, do you really need it? "
                             "Create an issue on the Alignak repository or submit a pull "
                             "request: http://www.github.com/Alignak-monitoring/alignak")
docs: used to raise warning if the user got parameter
          that we do not manage from now
  
          :return: None