code: def start(self, http_daemon=None):  # pylint: disable=unused-argument
          
  
          if not self.is_external:
              return
  
          if self.process:
              self.stop_process()
          logger.info("Starting external process for module %s...", self.name)
          proc = Process(target=self.start_module, args=(), group=None)
  
          # Under windows we should not call start() on an object that got its process
          # as an object, so we remove it and we set it in a earlier start
          try:
              del self.properties['process']
          except KeyError:
              pass
  
          proc.start()
          # We save the process data AFTER the fork()
          self.process = proc
          self.properties['process'] = proc
          logger.info("%s is now started (pid=%d)", self.name, proc.pid)
docs: Actually restart the process if the module is external
          Try first to stop the process and create a new Process instance
          with target start_module.
          Finally start process.
  
          :param http_daemon: Not used here but can be used in other modules
          :type http_daemon: None | object
          :return: None