@Override
 protected void onDestroy() {
   super.onDestroy();
   LoadLeaks.forgetActivity();
 }
 static void forgetActivity() {
   for (LoadLeaks loadLeaks : inFlight) {
     loadLeaks.activityOrNull = null;
   }
   inFlight.clear();
 }
 @Override
 protected void onResume() {
   super.onResume();
   LoadLeaks.load(this);
 }