for i, v := range s {
		result[i] = string(v)
	}
	return result
}

func collect(t *testing.T, seq iter.Seq[[]byte]) [][]byte {
	out := slices.Collect(seq)
	out1 := slices.Collect(seq)
	if !slices.Equal(sliceOfString(out), sliceOfString(out1)) {
		t.Fatalf("inconsistent seq:\n%s\n%s", out, out1)
	}
	return out
}

type LinesTest struct {
	a string
	b []string
}