Module stringifier_state_unsee 

Node: cxx:Method:Luau.Analysis:Analysis/src/ToString.cpp:201:stringifier_state_unsee Source: Analysis/src/ToString.cpp:201-207 (hand-ported)

C++ void unsee(const void* tv) — really erases (Luau::Set supports erase). An earlier translation wired this to the DenseHashSet no-op unsee, which made every repeated sibling type print *CYCLE*.