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: test1.go
    path of file: ./repos/learning/golang/source_code/Go语言基础与提升课程资料/源码/TestPackage
    
    the code of the file until where you have to start completion: package TestPackage

import "fmt"

//如果是不同包下调
    
func Add(args ...int) int { //求和函数
	sum := 0
	for _, v := range args {
		sum += v
	}
	return sum
}