@Override
    public void onStart() {
        // onStart might not be called because this object may be created after the fragment/activity's onStart method.
        resumeRequests();
    }
Lifecycle callback that registers for connectivity events (if the android.permission.ACCESS_NETWORK_STATE
permission is present) and restarts failed or paused requests.
core/src/main/java/com/bumptech/glide/RequestManager.java