Invert a change set against the input it was applied TO (the
BEFORE state), producing the undo set: applying the inverse to the
AFTER state restores the before state (id-stable round trip).
Cascade-removed edges are restored by the inverse as explicit
addEdges.
Invert a change set against the input it was applied TO (the BEFORE state), producing the undo set: applying the inverse to the AFTER state restores the before state (id-stable round trip). Cascade-removed edges are restored by the inverse as explicit addEdges.