@Override
 public void onHealthChannelStateChange(
     BluetoothHealthAppConfiguration config,
     BluetoothDevice device,
     int prevState,
     int newState,
     ParcelFileDescriptor fd,
     int channelId) {
   mCallback.onHealthChannelStateChange(config, device, prevState, newState, fd, channelId);
 }
 @Override
 public void onHealthAppConfigurationStatusChange(
     BluetoothHealthAppConfiguration config, int status) {
   mCallback.onHealthAppConfigurationStatusChange(config, status);
 }