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

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