(Go) VoiceBase -- Upload a media file for transcription and analysis

This example demonstrates how to upload a media file for transcription and analysis. It duplicates the following curl command:

curl https://apis.voicebase.com/v2-beta/media \
  --form media=@msg_123_abc.wav \
  --header "Authorization: Bearer ${TOKEN}"

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    // This example assumes the Chilkat HTTP API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // Insert your Bearer token here:
    accessToken := "VOICEBASE_TOKEN"

    http := chilkat.NewHttp()

    req := chilkat.NewHttpRequest()
    req.SetHttpVerb("POST")
    req.SetPath("/v2-beta/media")
    req.SetContentType("multipart/form-data")

    // Add the access (bearer) token to the request, which is a header
    // having the following format:
    // Authorization: Bearer <userAccessToken>
    sbAuth := chilkat.NewStringBuilder()
    sbAuth.Append("Bearer ")
    sbAuth.Append(accessToken)
    req.AddHeader("Authorization",*sbAuth.GetAsString())

    success := req.AddFileForUpload2("media","qa_data/wav/msg_123_abc.wav","audio/x-wav")
    if success != true {
        fmt.Println(req.LastErrorText())
        http.DisposeHttp()
        req.DisposeHttpRequest()
        sbAuth.DisposeStringBuilder()
        return
    }

    resp := http.SynchronousRequest("apis.voicebase.com",443,true,req)
    if http.LastMethodSuccess() != true {
        fmt.Println(http.LastErrorText())
        http.DisposeHttp()
        req.DisposeHttpRequest()
        sbAuth.DisposeStringBuilder()
        return
    }

    // Examine the response status code and body.
    fmt.Println("Response status code = ", resp.StatusCode())

    // The response should be JSON, even if an error.
    json := chilkat.NewJsonObject()
    json.Load(resp.BodyStr())
    json.SetEmitCompact(false)

    fmt.Println(*json.Emit())

    // A successful response will have a status code = 200
    if resp.StatusCode() != 200 {
        fmt.Println("Failed.")
    }
    else {
        fmt.Println("mediaId: ", *json.StringOf("mediaId"))
        fmt.Println("href: ", *json.StringOf("_links.self.href"))
        fmt.Println("status: ", *json.StringOf("status"))
        fmt.Println("Success.")
    }

    resp.DisposeHttpResponse()

    // Here is an example of a successful response:

    // 	{ 
    // 	  "_links": { 
    // 	    "self": { 
    // 	      "href": "/v2-beta/media/856a1e85-c847-4c3c-b7a4-6cf15cd51db4"
    // 	    }
    // 	  },
    // 	  "mediaId": "856a1e85-c847-4c3c-b7a4-6cf15cd51db4",
    // 	  "status": "accepted",
    // 	  "metadata": {}
    // 	

    http.DisposeHttp()
    req.DisposeHttpRequest()
    sbAuth.DisposeStringBuilder()
    json.DisposeJsonObject()