@RestrictTo(RestrictTo.Scope.LIBRARY)
    public void setAddedAppKeys(final List<NodeKey> addedAppKeyIndexes) {
        mAddedAppKeys = addedAppKeyIndexes;
    }
Returns the list of added AppKey indexes to the node
mesh/src/main/java/no/nordicsemi/android/mesh/transport/ProvisionedMeshNode.java