package main  import (     "encoding/json"     "fmt"     "io/ioutil"     "log"     "net/http" )  func main() {     // To consume 3rd party API, we need to build request object.     // This can be anything you want to consume, just paste the URL,     // usually, we test the URL in API clients such as Postman or through cURL, then     // we can proceed for consumption.     req, err := http.NewRequest(http.MethodGet, "https://jsonplaceholder.typicode.com/todos/2", nil)     if err != nil {         log.Fatalf("Failed to create request object for /GET endpoint: %v", err)     }      // Now add all the required request headers, mostly APIs secured with access tokens     // req.Header.Add("Authorization", "Bearer "+token)     // And today's application development, most of wire format is JSON.     // if the wire format we wanted to be different, we could request but server has to support it.     req.Header.Add("Content-type", "application/json; charset=utf-8")      // we can build our custom http clients but here we are using deafult http client     // when we use custom http client, we can send context object, timeouts etc..     client := &http.Client{}     resp, err := client.Do(req)     if err != nil {         log.Fatalf("Failed to send HTTP request: %v", err)     }      // here we are reading the response body from the server     body, err := ioutil.ReadAll(resp.Body)     if err != nil {         log.Fatalf("Failed to read response body: %v", err)     }      // Always close the response body     defer resp.Body.Close()      // now we need to read this to our native Golang type     // as the map data structure is close to JSON, we could use it     // in fact we could this for most of the wire formats.     data := make(map[string]interface{})      // this step de-serializes JSON data to our native Golang data     json.Unmarshal(body, &data)      // let's print the map data by iterating over it     for key, value := range data {         fmt.Printf("%s: %v
", key, value)     } }