Nullable arguments will be added to the `introspect` datastructures in a future change. PiperOrigin-RevId: 789350522 Change-Id: I0bfd12fab5121f94b937264570f907593b63cf64
PiperOrigin-RevId: 491613858 Change-Id: I0a878038bee5e929237fa23686f97319b15bddfc