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