test/data/err_142.py:5:1 [FURB142]: Replace `for x in y: s.add(x)` with `s.update(y)`
test/data/err_142.py:8:1 [FURB142]: Replace `for x in y: s.discard(x)` with `s.difference_update(y)`
test/data/err_142.py:11:1 [FURB142]: Replace `for x in y: s.add(...)` with `s.update(... for x in y)`
