Golang导入（未定义：请求）

I'm trying to create a custom function that passes the Request object back as a result:

 func ConstructRequest(testParameters string, reqType string) Request {
    req, err := http.NewRequest(reqType, testPath+testParameters, nil)

    if err != nil {
        log.Fatal(err)
        return nil
    } else {
        return req
    }
}

but I'm getting a "undefined: Request" error

I'm not sure what library I need to import to make it work?

undefined: Request seems normal if you don't specify the package for the returned type:

func ConstructRequest(testParameters string, reqType string) http.Request
                                                             ^^^^

Since http.NewRequest() returns a pointer, this should be:

func ConstructRequest(testParameters string, reqType string) *http.Request