enum E<X> { one(1), two("2"); final X field; const E(this.field); }
test() {}
foo(E<int> ei, E<String> es) {}
bar(E<int> ei, E<String> es) {}
baz(E<Object> ei, E<Object> es) {}
boz(E<Never> ei, E<Never> es) {}
checkIsType<T>(x) {}
checkIsNotType<T>(x) {}
main() {}