sort result is unexpected about go-linq

[kom0055]

fine , i found this

type sortArr []int

func (s sortArr) Len() int {
	return len(s)
}

func (s sortArr) Less(i, j int) bool {
	return true
}

func (s sortArr) Swap(i, j int) {
	s[i], s[j] = s[j], s[i]
}

func TestSort(t *testing.T) {
	s := []int{3, 4, 5, 1, 2}
	
	t.Log(s)

	sort.SliceIsSorted(s, func(i, j int) bool {
		return true
	})
	t.Log(s)

	e := &[]int{}
	linq.From(s).Sort(func(i, j interface{}) bool {
		return true
	}).ToSlice(e)
	t.Log(e)

	t.Log(s)
	sort.Sort(sortArr(s))
	t.Log(s)
}

result

    resource_test.go:104: [3 4 5 1 2]
    resource_test.go:109: [3 4 5 1 2]
    resource_test.go:115: &[2 1 5 4 3]
    resource_test.go:117: [3 4 5 1 2]
    resource_test.go:119: [2 1 5 4 3]

so there's diffrence between sort.SliceIsSorted and sor.Sort