private JsonElement serializeNetKeys(@NonNull final JsonSerializationContext context,
                                         @NonNull final List<NetworkKey> networkKeys) {
        final Type networkKey = new TypeToken<List<NetworkKey>>() {
        }.getType();
        return context.serialize(networkKeys, networkKey);
    }
Returns a JsonElement of application keys keys after serializing the network keys

@param context     Serializer context
@param networkKeys Network key list
@return JsonElement
mesh/src/main/java/no/nordicsemi/android/mesh/MeshNetworkDeserializer.java