@Override
    protected void onCleared() {
        super.onCleared();
        mNrfMeshRepository.disconnect();
        mScannerRepository.unregisterBroadcastReceivers();
    }
ViewModel for {@link NetworkFragment}, {@link GroupsFragment}, {@link ProxyFilterFragment}, {@link SettingsFragment}
app/src/main/java/no/nordicsemi/android/nrfmesh/viewmodels/SharedViewModel.java