code: def ec2_route_table_tagged_route_table_id(self, lookup, default=None):
      
      route_table = EFAwsResolver.__CLIENTS["ec2"].describe_route_tables(Filters=[
        {'Name': 'tag-key', 'Values': ['Name']},
        {'Name': 'tag-value', 'Values': [lookup]}
      ])
      if len(route_table["RouteTables"]) is not 1:
        return default
      return route_table["RouteTables"][0]["RouteTableId"]
docs: Args:
        lookup: the tagged route table name, should be unique
        default: the optional value to return if lookup failed; returns None if not set
      Returns:
        the ID of the route table, or default if no match/multiple matches found