Opc.Ua.Server.CoreNodeManager.UpdateTypeDefinition C# (CSharp) Method

        private void UpdateTypeDefinition(ILocalNode instance, ExpandedNodeId typeDefinitionId)
        {
            // check existing type definition.
            ExpandedNodeId existingTypeId = instance.TypeDefinitionId;

            if (existingTypeId == typeDefinitionId)
            {
                return;
            }

            if (!NodeId.IsNull(existingTypeId))
            {
                if (m_nodes.TypeTree.IsTypeOf(existingTypeId, typeDefinitionId))
                {
                    throw ServiceResultException.Create(
                        StatusCodes.BadTypeDefinitionInvalid,
                        "Type definition {0} is not a subtype of the existing type definition {1}.",
                        existingTypeId,
                        typeDefinitionId);
                }

                DeleteReference(instance, ReferenceTypeIds.HasTypeDefinition, false, existingTypeId, false);
            }

            AddReference(instance, ReferenceTypeIds.HasTypeDefinition, false, typeDefinitionId);
        }