code: public java.util.List<TransitGatewayRouteTable> getTransitGatewayRouteTables() {
          if (transitGatewayRouteTables == null) {
              transitGatewayRouteTables = new com.amazonaws.internal.SdkInternalList<TransitGatewayRouteTable>();
          }
          return transitGatewayRouteTables;
      }
docs: <p>
  Information about the transit gateway route tables.
  </p>
  
  @return Information about the transit gateway route tables.