what is unity web request code example

Example: how to do a web request unity

IEnumerator SendRequest(string url)
    {
        UnityWebRequest request = UnityWebRequest.Get(url);
        yield return request.SendWebRequest();

        if (request.isNetworkError || request.isHttpError)
        {
            Debug.LogError(string.Format("Error: {0}",request.error));
        }

        else
        {
            // Response can be accessed through: request.downloadHandler.text
            Debug.Log(request.downloadHandler.text);
        }
    }