Simple Unity Google Translator

GoogleTranslator.cs

/* Credit */
// Inspired by grimmdev's code - https://gist.github.com/grimmdev/979877fcdc943267e44c

/* Dependency */
// Import SimpleJSON Scripts : http://wiki.unity3d.com/index.php/SimpleJSON
// You can use your own JSON Parser if you want.

/* Limitations */
// translate.googleapis.com is free, but it only allows about 100 requests per one hour.
// After that, you will receive 429 error response.
// You may consider using paid service like google translate v2(https://translation.googleapis.com/language/translate/v2) to remove the limitations.
// Check here if you want to use paid version : https://gist.github.com/IJEMIN/fdff6db1b1131b91033cbf204247816e

using System;
using System.Collections;
using Newtonsoft.Json.Linq;
using UnityEngine;
using UnityEngine.Networking;

public class GoogleTranslator : MonoBehaviour {
    private void Awake()
    {
        DoExample();
    }
public class GoogleTranslator : MonoBehaviour {

    // Remove this method after understanding how to use.
    private void DoExample()
    {
        TranslateText("en","ko","I'm a real gangster.", (success, translatedText) =>
        {
            if (success)
            {
                Debug.Log(translatedText);
            }
        });

        TranslateText("ko","en","나는 리얼 갱스터다.", (success, translatedText) =>
        {
            if (success)
            {
                Debug.Log(translatedText);
            }
        });
    }
    
    public void TranslateText(string sourceLanguage, string targetLanguage, string sourceText, Action<bool, string> callback) {
        StartCoroutine(TranslateTextRoutine(sourceLanguage, targetLanguage, sourceText, callback));
    }

    private static IEnumerator TranslateTextRoutine(string sourceLanguage, string targetLanguage, string sourceText, Action<bool, string> callback) {
        var url = $"https://translate.googleapis.com/translate_a/single?client=gtx&sl={sourceLanguage}&tl={targetLanguage}&dt=t&q={UnityWebRequest.EscapeURL(sourceText)}";

        using (var webRequest = UnityWebRequest.Get(url)) {
            yield return webRequest.SendWebRequest();

            if (webRequest.result == UnityWebRequest.Result.ProtocolError || webRequest.result == UnityWebRequest.Result.ConnectionError) {
                Debug.LogError(webRequest.error);
                callback.Invoke(false, string.Empty);
                yield break;
            }

            try {
                // Parsowanie JSON za pomocą Newtonsoft.Json
                var jsonResponse = JArray.Parse(webRequest.downloadHandler.text);

                // Zbieranie wszystkich fragmentów tłumaczenia
                string translatedText = string.Empty;
                foreach (var segment in jsonResponse[0]) {
                    translatedText += segment[0]?.ToString();
                }

                callback.Invoke(true, translatedText);
            } catch (Exception ex) {
                Debug.LogError($"JSON Parsing Error: {ex.Message}");
                callback.Invoke(false, string.Empty);
            }
        }
    }
}