// @dart = 2.9
main() {}
void expect(List list1, List list2) {}
void foldInitialElements() {}
void foldInitialSpread1() {}
void foldInitialSpread2() {}
void foldInitialSpread3() {}
void foldInitialSpread4() {}
void foldInitialSpread5() {}
void foldInitialSpread6() {}