/* Mirrors Activity#onStop(...) */
 void onStop() {
   if (mCheckout != null) {
     mCheckout.stop();
     AppHeap.getCheckoutInternal().requestDisconnect();
   }
   mPowerSaveDetector.stop();
 }
 /* Mirrors Activity#onStart(...) */
 void onStart() {
   if (mCheckout != null) {
     AppHeap.getCheckoutInternal().requestConnect();
     mCheckout.start();
   }
   mPowerSaveDetector.start();
 }