*
* Once all processing nodes have been added, this will make sure the fat
* tree is generated by calling generateLabels(), generateSwitches() and
* then connection all nodes between them, using their label.
*/
void seal() override;
*
* Once all processing nodes have been added, this will make sure the fat
* tree is generated by calling generateLabels(), generateSwitches() and
* then connection all nodes between them, using their label.
*/
void seal() override;