code: def get_all_route_tables(self, route_table_ids=None, filters=None):
          
          params = {}
          if route_table_ids:
              self.build_list_params(params, route_table_ids, "RouteTableId")
          if filters:
              self.build_filter_params(params, dict(filters))
          return self.get_list('DescribeRouteTables', params, [('item', RouteTable)])
docs: Retrieve information about your routing tables. You can filter results
          to return information only about those route tables that match your
          search parameters. Otherwise, all route tables associated with your
          account are returned.
  
          :type route_table_ids: list
          :param route_table_ids: A list of strings with the desired route table
                                  IDs.
  
          :type filters: list of tuples
          :param filters: A list of tuples containing filters. Each tuple
                          consists of a filter key and a filter value.
  
          :rtype: list
          :return: A list of :class:`boto.vpc.routetable.RouteTable`