Go program to access Clarifai API

mycf.go

package main

import (
        "encoding/json"
        "fmt"
        "net/http"
        "net/url"
        "strings"
)

const (
        clientID = "Your ClientID"
        clientSecret = "Your ClientSecret"
)

type TokenResp struct {
        AccessToken string `json:"access_token"`
        ExpiresIn   int    `json:"expires_in"`
        Scope       string `json:"scope"`
        TokenType   string `json:"token_type"`
}

func main() {
        accessToken, err := requestAccessToken()
        if err != nil {
                fmt.Println(err)
        }
        fmt.Println("AccessToken = ", accessToken)
}

func requestAccessToken() (string, error) {
        form := url.Values{}
        form.Set("grant_type", "client_credentials")
        form.Set("client_id", clientID)
        form.Set("client_secret", clientSecret)

        formData := strings.NewReader(form.Encode())

        url := fmt.Sprintf("https://api.clarifai.com/v1/token/")

        req, err := http.NewRequest("POST", url, formData)
        if err != nil {
                return "", err
        }

        req.Header.Set("Content-Type", "application/x-www-form-urlencoded")        
        
        httpClient := &http.Client{}

        resp, err := httpClient.Do(req)
        if err != nil {
                return "", err
        }

        defer resp.Body.Close()       
        
        var record TokenResp   
        
        if err := json.NewDecoder(resp.Body).Decode(&record); err != nil {
                return "", err
        }

        return record.AccessToken, nil
}