Corruption function only on node features X not graph structure A?

[zhengwang100]

Hello, the paper said: "an explicit (stochastic) corruption function (\tilde{X}, \tilde{A}) = C(X, A)."
However, in the code, I only find the corruption on node attributes:
idx = np.random.permutation(nb_nodes)
shuf_fts = features[:, idx, :]

I can not find the corruption on the graph structure, why? Does this not affect the final result?

thanks