Opc.Ua.Client.NodeCache.FetchNode C# (CSharp) Method

        public Node FetchNode(ExpandedNodeId nodeId)
        {
            NodeId localId = ExpandedNodeId.ToNodeId(nodeId, m_session.NamespaceUris);

            if (localId == null)
            {
                return null;
            }

            // fetch node from server.
            Node source = m_session.ReadNode(localId);

            try
            {
                // fetch references from server.
                ReferenceDescriptionCollection references = m_session.FetchReferences(localId);

                foreach (ReferenceDescription reference in references)
                {
                    // create a placeholder for the node if it does not already exist.
                    if (!m_nodes.Exists(reference.NodeId))
                    {
                        Node target = new Node(reference);
                        m_nodes.Attach(target);
                    }

                    // add the reference.
                    source.ReferenceTable.Add(reference.ReferenceTypeId, !reference.IsForward, reference.NodeId);
                }
            }
            catch (Exception e)
            {
                Utils.Trace("Could not fetch references for valid node with NodeId = {0}. Error = {1}", nodeId, e.Message);
            }

            // add to cache.
            m_nodes.Attach(source);

            return source;
        }