code: public void setTransitGatewayRouteTablePropagations(java.util.Collection<TransitGatewayRouteTablePropagation> transitGatewayRouteTablePropagations) {
          if (transitGatewayRouteTablePropagations == null) {
              this.transitGatewayRouteTablePropagations = null;
              return;
          }
  
          this.transitGatewayRouteTablePropagations = new com.amazonaws.internal.SdkInternalList<TransitGatewayRouteTablePropagation>(
                  transitGatewayRouteTablePropagations);
      }
docs: <p>
  Information about the route table propagations.
  </p>
  
  @param transitGatewayRouteTablePropagations
  Information about the route table propagations.