Opc.Ua.Com.Client.AeTypeCache.GetMappingNode C# (CSharp) Method

        public AeEventTypeMappingState GetMappingNode(ServerSystemContext context, NodeId nodeId)
        {
            BaseObjectTypeState objectType = null;

            if (!EventTypeNodes.TryGetValue(nodeId, out objectType))
            {
                return null;
            }

            AeEventTypeMappingState mappingNode = objectType as AeEventTypeMappingState;

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

            if (context.TypeTable.FindSubTypes(mappingNode.NodeId).Count == 0)
            {
                return null;
            }

            return mappingNode;
        }