code: public java.util.List<String> getTransitGatewayIds() {
          if (transitGatewayIds == null) {
              transitGatewayIds = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return transitGatewayIds;
      }
docs: <p>
  The IDs of the transit gateways.
  </p>
  
  @return The IDs of the transit gateways.