Android zoom sdk 5.14 Must I use jwtToken to initialize the SDK, can I no longer use appkey and appSecret

Must jwtToken be used to initialize sdk for Android zoom sdk 5.14? Can appkey and appSecret be used no more? The version of Android SDK I used before is 5.5, and jwtToken can be used. appkey and appSecret can also be used. Isn’t it more convenient to use appkey and appSecret? Why do we remove appkey and appSecret to initialize Android SKD now