Opc.Ua.JsonDecoder.ReadExtensionObject C# (CSharp) Method

        public ExtensionObject ReadExtensionObject(string fieldName)
        {
            object token = null;

            if (!ReadField(fieldName, out token))
            {
                return null;
            }

            var value = token as Dictionary<string, object>;

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

            try
            {
                m_stack.Push(value);

                NodeId typeId = ReadNodeId("TypeId");

                ExpandedNodeId absoluteId = NodeId.ToExpandedNodeId(typeId, m_context.NamespaceUris);

                if (!NodeId.IsNull(typeId) && NodeId.IsNull(absoluteId))
                {
                    Utils.Trace("Cannot de-serialized extension objects if the NamespaceUri is not in the NamespaceTable: Type = {0}", typeId);
                }

                Type systemType = m_context.Factory.GetSystemType(typeId);

                if (systemType != null)
                {
                    var encodeable = ReadEncodeable("Object", systemType);
                    return new ExtensionObject(typeId, encodeable);
                }

                if (value.ContainsKey("Binary"))
                {
                    var bytes = ReadByteString("Binary");
                    return new ExtensionObject(typeId, bytes);
                }

                if (value.ContainsKey("Xml"))
                {
                    var xml = ReadXmlElement("Xml");
                    return new ExtensionObject(typeId, xml);
                }

                return new ExtensionObject();
            }
            finally
            {
                m_stack.Pop();
            }
        }