/// <summary>
        /// Allows sub-class to add additional references to a element node after validation.
        /// </summary>
        protected override void AddAdditionalElementReferences(ServerSystemContext context, NodeState node)
        {
            IList <IReference> references = null;

            if (m_references.TryGetValue(node.NodeId, out references))
            {
                node.AddReferences(references);
            }
        }
        /// <summary>
        /// Allows sub-class to add additional references to a element node after validation.
        /// </summary>
        protected override void AddAdditionalElementReferences(ServerSystemContext context, NodeState node)
        {
            IList<IReference> references = null;

            if (m_references.TryGetValue(node.NodeId, out references))
            {
                node.AddReferences(references);
            }
        }