Unity StartCoroutine MoveNext and mapper?

Question

I have just jumped to Unity and I am doing some experiments to retrive data from an API

Below you can see the test code could you please help me to understand if i am the right way or not please?, because probably i am missing the mapper isn't it ?

Thanks in advance.

  void Start()
    {    
        comments= StartCoroutine(this.GetComments("https://jsonplaceholder.typicode.com/comments"));
        Debug.Log(comments);
    }

   private IEnumerator Comments GetComments(string url) {

        List<Comments> returnComments = new List<Comments>();

        UnityWebRequest comments = UnityWebRequest.Get(url)
        comments.SendWebRequest();

        while (comments.MoveNext())
        {
            var comment = comments.Current;                    
            returnItems.Add(comment);
        }

        return returnComments;
    }

Answer 1

Yield the SendWebRequest function.

yield return webRequest.SendWebRequest();

Access the data through the download handler.

var dataString = webRequest.downloadHandler.text;

Full sample code in the docs UnityWebRequest.Get