code: public MockRouteTable getMockRouteTable(final String routetableId) {
          if (routetableId != null) {
               return allMockRouteTables.get(routetableId);
          }
  
          return null;
      }
docs: Get mock RouteTable instance by RouteTable ID.
  
  @param routetableId
  ID of the mock RouteTable to get
  @return the mock RouteTable object