code: def _flow_check_handler(self):
          
          LOG.info("In _flow_check_handler")
          try:
              with self.ovs_vdp_lock:
                  self._flow_check_handler_internal()
          except Exception as e:
              LOG.error("Exception in _flow_check_handler_internal %s",
                        str(e))
docs: Top level routine to check OVS flow consistency.