code: private DeleteRouteTableResponseType deleteRouteTable(final String routeTableId) {
          DeleteRouteTableResponseType ret = new DeleteRouteTableResponseType();
          ret.setRequestId(UUID.randomUUID().toString());
          mockRouteTableController.deleteRouteTable(routeTableId);
          return ret;
      }
docs: Handles "deleteRouteTable" request to delete routetable and returns response with a route table.
  @param routeTableId Route table Id.
  @return a CreateRouteTableResponseType with route table