How does the GraphRNN-S deal with variable length?

[brando90]

I was wondering if you just set the output to make possible edges for the current graph? My guess that is the case based on:

https://github.com/JiaxuanYou/graph-generation/blob/3444b8ad2fd7ecb6ade45086b4c75f8e2e9f29d1/main.py#L124

can anyone confirm?