/**
  * Implementation of the functionality related to stopping discovery of remote apps which are
  * hosting chat channels.
  */
 private void doStopDiscovery() {
   Log.i(TAG, "doStopDiscovery()");
   assert (mBusAttachmentState == BusAttachmentState.CONNECTED);
   mBus.cancelFindAdvertisedName(NAME_PREFIX);
   mBusAttachmentState = BusAttachmentState.CONNECTED;
 }