// the version:
	// Unity 2019.4.28f1 Personal

	// the error:
	// 	error CS1061: 'UnityWebRequest' does not contain a definition for 'result'
	// 	and no accessible extension method 'result' accepting a first argument of
	// 	type 'UnityWebRequest' could be found (are you missing a using directive
	// 	or an assembly reference?)

	// the function:
    IEnumerator setImage(SpriteRenderer sr, string url) {
        using (UnityEngine.Networking.UnityWebRequest uwr = UnityEngine.Networking.UnityWebRequestTexture.GetTexture(url)) {
            yield return uwr.SendWebRequest();
            if (uwr.result == UnityEngine.Networking.UnityWebRequest.Result.Success) {
                Texture2D texture =  UnityEngine.Networking.DownloadHandlerTexture.GetContent(uwr);
                Sprite generatedSprite = Sprite.Create(texture, new Rect(0f, 0f, 1f, 1f), new Vector2(0.5f, 0.5f));
                sr.sprite = generatedSprite;
            }
        }
    }