docs: public DescribeRouteTablesResult withRouteTables(RouteTable... routeTables) {
          if (this.routeTables == null) {
              setRouteTables(new com.amazonaws.internal.SdkInternalList<RouteTable>(routeTables.length));
          }
          for (RouteTable ele : routeTables) {
              this.routeTables.add(ele);
          }
          return this;
      }