You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: 216. Combination Sum III.go
    path of file: ./repos/LeetCode-Go/leetcode/0216.Combination-Sum-III
    
    the code of the file until where you have to start completion: package leetcode

func combinationSum3(k int, n int) [][]int {
	if k == 0 {
		return [][]int{}
	}
	c, res := []int{}, [][]int{}
	findcombinationSum3(k, n, 1, c, &res)
	return res
}

func findcombinationSum3(k, target, index int, c []int, res *[][]int) {
	if targe
    
func findcombinationSum3(k, target, index int, c []int, res *[][]int) {
	if target == 0 {
		if len(c) == k {
			b := make([]int, len(c))
			copy(b, c)
			*res = append(*res, b)
		}
		return
	}
	for i := index; i < 10; i++ {
		if target >= i {
			c = append(c, i)
			findcombinationSum3(k, target-i, i+1, c, res)
			c = c[:len(c)-1]
		}
	}
}