code: def update(self, new_routing_table):
          
          self.routers.replace(new_routing_table.routers)
          self.readers.replace(new_routing_table.readers)
          self.writers.replace(new_routing_table.writers)
          self.last_updated_time = self.timer()
          self.ttl = new_routing_table.ttl
          log_debug("[#0000]  S: <ROUTING> table=%r", self)
docs: Update the current routing table with new routing information
          from a replacement table.