FreeOpcUa / python-opcua

        if obj.abstract:

            attrs.IsAbstract = obj.abstract

        if obj.dimensions:

            attrs.ArrayDimensions = obj.dimensions

        node.NodeAttributes = attrs

        res = self.server.add_nodes([node])

        self._add_refs(obj)

        return res[0].AddedNodeId

    def add_method(self, obj):

        node = self._get_node(obj)

        attrs = ua.MethodAttributes()

        if obj.desc:

            attrs.Description = ua.LocalizedText(obj.desc)

        attrs.DisplayName = ua.LocalizedText(obj.displayname)

        if obj.accesslevel:

            attrs.AccessLevel = obj.accesslevel

        if obj.useraccesslevel:

            attrs.UserAccessLevel = obj.useraccesslevel

        if obj.minsample:

            attrs.MinimumSamplingInterval = obj.minsample

        if obj.dimensions:

            attrs.ArrayDimensions = obj.dimensions

        node.NodeAttributes = attrs

        if obj.minsample:

            attrs.MinimumSamplingInterval = obj.minsample

        if obj.dimensions:

            attrs.ArrayDimensions = obj.dimensions

        node.NodeAttributes = attrs

        res = self.server.add_nodes([node])

        self._add_refs(obj)

        return res[0].AddedNodeId

    def add_reference_type(self, obj):

        node = self._get_node(obj)

        attrs = ua.ReferenceTypeAttributes()

        if obj.desc:

            attrs.Description = ua.LocalizedText(obj.desc)

        attrs.DisplayName = ua.LocalizedText(obj.displayname)

        if obj. inversename:

            attrs.InverseName = ua.LocalizedText(obj.inversename)

        if obj.abstract:

            attrs.IsAbstract = obj.abstract

        if obj.symmetric:

            attrs.Symmetric = obj.symmetric

        node.NodeAttributes = attrs

            extobj = self._make_ext_obj(obj.value)

            return ua.Variant(extobj, getattr(ua.VariantType, obj.valuetype))

        elif obj.valuetype == 'DateTime':

            return ua.Variant(dateutil.parser.parse(obj.value), getattr(ua.VariantType, obj.valuetype))

        elif obj.valuetype == 'Guid':

            return ua.Variant(uuid.UUID(obj.value), getattr(ua.VariantType, obj.valuetype))

        else:

            return ua.Variant(obj.value, getattr(ua.VariantType, obj.valuetype))

    def add_variable_type(self, obj):

        node = self._get_node(obj)

        attrs = ua.VariableTypeAttributes()

        if obj.desc:

            attrs.Description = ua.LocalizedText(obj.desc)

        attrs.DisplayName = ua.LocalizedText(obj.displayname)

        attrs.DataType = self.to_nodeid(obj.datatype)

        if obj.value and len(obj.value) == 1:

            attrs.Value = obj.value[0]

        if obj.rank:

            attrs.ValueRank = obj.rank

        if obj.abstract:

            attrs.IsAbstract = obj.abstract

        if obj.dimensions:

            attrs.ArrayDimensions = obj.dimensions

        node.NodeAttributes = attrs