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Interfaces

Defining an Interface​

An interface in OPC UA Modeler is defined using the interfaceTypes keyword. Each interface can have multiple components, each with a browseName, dataType, and modellingRule.

Here is an example of defining an interface called IVendorPlateType:

interfaceTypes:
  - browseName: IVendorPlateType
    components:
      - browseName: Manufacturer
        dataType: ua:LocalizedText
      - browseName: SerialNumber
        dataType: ua:String
      - browseName: Revision
        dataType: ua:LocalizedText
        modellingRule: Optional # only specify modellingRule if the component is optional, by default it is mandatory

Implementing an Interface at the Object Type Level​

To implement an interface at the object type level, you use the interfaces keyword within the object type definition.

Here is an example of defining an object type called MySensorType that implements the IVendorPlateType interface:

objectTypes:
  - browseName: MySensorType
    subtypeOf: di:ComponentType
    interfaces:
      - browseName: IVendorPlateType

Implementing an Interface at the Component Level​

Interfaces can also be implemented at the component level, meaning that the component itself implements the interface. This is done using the interfaces keyword within the components definition.

Here is an example of defining an object type called MySensorType with a component called Identification that implements the IVendorPlateType interface:

objectTypes:
  - browseName: MySensorType
    subtypeOf: di:ComponentType
    components:
      - browseName: Identification
        typeDefinition: ua:FolderType
        interfaces:
          - browseName: IVendorPlateType

Promoting Optional Members to Mandatory at the interface implementation level​

For advanced use, it is possible to promote some optional members of the original interface to mandatory. This is done using the promotedToMandatory keyword within the interfaces definition.

Here is an example of promoting the Revision member to mandatory:

objectTypes:
  - browseName: MySensorType
    subtypeOf: di:ComponentType
    components:
      - browseName: Identification
        typeDefinition: ua:FolderType
        interfaces:
          - browseName: IVendorPlateType
            promotedToMandatory:
              - di:Revision

Implementing an Interface from another namespace​

You can also implement an interface that has been defined in another namespace by prefixing the browseName with the namespace alias.

namespaces:
  - di # import the device integration namespace
objectTypes:
  - browseName: MySensorType
    subtypeOf: di:ComponentType
    interfaces:
      # implement the IVendorPlateType interface from the di namespace
      - browseName: di:IVendorNameplateType
        # and turn the optional property of IVendorPlateType into mandatory in 
        # our implementation
        promotedToMandatory:
          - di:Revision
          - di:Manufacturer
          - di:SerialNumber

Examples​

Example: Interface application to an ObjectType​

alt text

# yaml-language-server: $schema=../../schemas/nodeset2.schema.json
namespaceUri: http://sterfive.com/UA/test/
publicationDate: "2020-01-01T00:00:00.000Z"

interfaceTypes:
  - browseName: ISerializeServiceType
    components:
      - browseName: SerialiazedData
        dataType: ua:ByteString
    methods:
      - browseName: Serialize
  - browseName: ITransactionServiceType
    methods:
      - browseName: Start
      - browseName: Abort
      - browseName: Commit
  - browseName: ILocationType
    properties:
      - browseName: GPS
        dataType: ua:String
        modellingRule: Mandatory
      - browseName: FloorLocation
        dataType: ua:String
        modellingRule: Optional
      - browseName: Address
        dataType: ua:String
        modellingRule: Optional

# Interface application to an ObjectType
objectTypes:
  - browseName: XYZDeviceType
    interfaces:
      - browseName: ILocationType
        promotedToMandatory:
           - Address

instances:
  - browseName: MD002
    typeDefinition: XYZDeviceType
    organizedBy: /ua:Objects

XML file for the above example
<?xml version="1.0"?>
<UANodeSet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:uax="http://opcfoundation.org/UA/2008/02/Types.xsd" xmlns="http://opcfoundation.org/UA/2011/03/UANodeSet.xsd" xmlns:ns1="http://sterfive.com/UA/test/Type.xsd">
    <NamespaceUris>
        <Uri>http://sterfive.com/UA/test/</Uri>
    </NamespaceUris>
    <Models>
        <Model ModelUri="http://sterfive.com/UA/test/" Version="0.0.0" PublicationDate="2020-01-01T00:00:00.000Z">
            <RequiredModel ModelUri="http://opcfoundation.org/UA/" Version="1.05.06" PublicationDate="2025-11-08T00:00:00.000Z"/>
        </Model>
    </Models>
    <Aliases>
        <Alias Alias="ByteString">i=15</Alias>
        <Alias Alias="HasComponent">i=47</Alias>
        <Alias Alias="HasInterface">i=17603</Alias>
        <Alias Alias="HasModellingRule">i=37</Alias>
        <Alias Alias="HasProperty">i=46</Alias>
        <Alias Alias="HasSubtype">i=45</Alias>
        <Alias Alias="HasTypeDefinition">i=40</Alias>
        <Alias Alias="Organizes">i=35</Alias>
        <Alias Alias="String">i=12</Alias>
    </Aliases>
<!--ReferenceTypes-->
<!--ObjectTypes-->
<!--ObjectType - 1:ISerializeServiceType {{{{ -->
    <UAObjectType NodeId="ns=1;i=1000" BrowseName="1:ISerializeServiceType">
        <DisplayName>ISerializeServiceType</DisplayName>
        <References>
            <Reference ReferenceType="HasSubtype" IsForward="false">i=17602</Reference>
            <Reference ReferenceType="HasComponent">ns=1;i=1001</Reference>
            <Reference ReferenceType="HasComponent">ns=1;i=1002</Reference>
        </References>
    </UAObjectType>
    <UAVariable NodeId="ns=1;i=1001" BrowseName="1:SerialiazedData" ParentNodeId="ns=1;i=1000" AccessLevel="3" DataType="ByteString">
        <DisplayName>SerialiazedData</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=63</Reference>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAVariable>
    <UAMethod NodeId="ns=1;i=1002" BrowseName="1:Serialize" ParentNodeId="ns=1;i=1000">
        <DisplayName>Serialize</DisplayName>
        <References>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAMethod>
<!--ObjectType - 1:ISerializeServiceType }}}}-->
<!--ObjectType - 1:ITransactionServiceType {{{{ -->
    <UAObjectType NodeId="ns=1;i=1003" BrowseName="1:ITransactionServiceType">
        <DisplayName>ITransactionServiceType</DisplayName>
        <References>
            <Reference ReferenceType="HasSubtype" IsForward="false">i=17602</Reference>
            <Reference ReferenceType="HasComponent">ns=1;i=1004</Reference>
            <Reference ReferenceType="HasComponent">ns=1;i=1005</Reference>
            <Reference ReferenceType="HasComponent">ns=1;i=1006</Reference>
        </References>
    </UAObjectType>
    <UAMethod NodeId="ns=1;i=1004" BrowseName="1:Start" ParentNodeId="ns=1;i=1003">
        <DisplayName>Start</DisplayName>
        <References>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAMethod>
    <UAMethod NodeId="ns=1;i=1005" BrowseName="1:Abort" ParentNodeId="ns=1;i=1003">
        <DisplayName>Abort</DisplayName>
        <References>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAMethod>
    <UAMethod NodeId="ns=1;i=1006" BrowseName="1:Commit" ParentNodeId="ns=1;i=1003">
        <DisplayName>Commit</DisplayName>
        <References>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAMethod>
<!--ObjectType - 1:ITransactionServiceType }}}}-->
<!--ObjectType - 1:ILocationType {{{{ -->
    <UAObjectType NodeId="ns=1;i=1007" BrowseName="1:ILocationType">
        <DisplayName>ILocationType</DisplayName>
        <References>
            <Reference ReferenceType="HasSubtype" IsForward="false">i=17602</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1008</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1009</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1010</Reference>
        </References>
    </UAObjectType>
    <UAVariable NodeId="ns=1;i=1008" BrowseName="1:GPS" ParentNodeId="ns=1;i=1007" AccessLevel="3" DataType="String">
        <DisplayName>GPS</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=68</Reference>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAVariable>
    <UAVariable NodeId="ns=1;i=1009" BrowseName="1:FloorLocation" ParentNodeId="ns=1;i=1007" AccessLevel="3" DataType="String">
        <DisplayName>FloorLocation</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=68</Reference>
            <Reference ReferenceType="HasModellingRule">i=80</Reference>
        </References>
    </UAVariable>
    <UAVariable NodeId="ns=1;i=1010" BrowseName="1:Address" ParentNodeId="ns=1;i=1007" AccessLevel="3" DataType="String">
        <DisplayName>Address</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=68</Reference>
            <Reference ReferenceType="HasModellingRule">i=80</Reference>
        </References>
    </UAVariable>
<!--ObjectType - 1:ILocationType }}}}-->
<!--ObjectType - 1:XYZDeviceType {{{{ -->
    <UAObjectType NodeId="ns=1;i=1011" BrowseName="1:XYZDeviceType">
        <DisplayName>XYZDeviceType</DisplayName>
        <References>
            <Reference ReferenceType="HasSubtype" IsForward="false">i=58</Reference>
            <Reference ReferenceType="HasInterface">ns=1;i=1007</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1012</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1013</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1014</Reference>
        </References>
    </UAObjectType>
    <UAVariable NodeId="ns=1;i=1012" BrowseName="1:GPS" ParentNodeId="ns=1;i=1011" AccessLevel="3" DataType="String">
        <DisplayName>GPS</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=68</Reference>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAVariable>
    <UAVariable NodeId="ns=1;i=1013" BrowseName="1:FloorLocation" ParentNodeId="ns=1;i=1011" AccessLevel="3" DataType="String">
        <DisplayName>FloorLocation</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=68</Reference>
            <Reference ReferenceType="HasModellingRule">i=80</Reference>
        </References>
    </UAVariable>
    <UAVariable NodeId="ns=1;i=1014" BrowseName="1:Address" ParentNodeId="ns=1;i=1011" AccessLevel="3" DataType="String">
        <DisplayName>Address</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=68</Reference>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAVariable>
<!--ObjectType - 1:XYZDeviceType }}}}-->
<!--VariableTypes-->
<!--Other Nodes-->
<!--Object - 1:MD002 {{{{ -->
    <UAObject NodeId="ns=1;i=1015" BrowseName="1:MD002">
        <DisplayName>MD002</DisplayName>
        <References>
            <Reference ReferenceType="Organizes" IsForward="false">i=85</Reference>
            <Reference ReferenceType="HasTypeDefinition">ns=1;i=1011</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1016</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1017</Reference>
        </References>
    </UAObject>
    <UAVariable NodeId="ns=1;i=1016" BrowseName="1:GPS" ParentNodeId="ns=1;i=1015" AccessLevel="3" DataType="String">
        <DisplayName>GPS</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=68</Reference>
        </References>
    </UAVariable>
    <UAVariable NodeId="ns=1;i=1017" BrowseName="1:Address" ParentNodeId="ns=1;i=1015" AccessLevel="3" DataType="String">
        <DisplayName>Address</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=68</Reference>
        </References>
    </UAVariable>
<!--Object - 1:MD002 }}}} -->
</UANodeSet>

Example: One Interface applied to an ObjectType another one to the instance​

alt text

# yaml-language-server: $schema=./nodeset2.schema.json
namespaceUri: http://sterfive.com/UA/test/
publicationDate: "2020-01-01T00:00:00.000Z"

interfaceTypes:
  - browseName: ISerializeServiceType
    components:
      - browseName: SerialiazedData
        dataType: ua:ByteString
    methods:
      - browseName: Serialize
  - browseName: ITransactionServiceType
    methods:
      - browseName: Start
      - browseName: Abort
      - browseName: Commit
  - browseName: ILocationType
    properties:
      - browseName: GPS
        dataType: ua:String
        modellingRule: Mandatory
      - browseName: FloorLocation
        dataType: ua:String
        modellingRule: Optional
      - browseName: Address
        dataType: ua:String
        modellingRule: Optional

# Interface application to an ObjectType
objectTypes:
  - browseName: XYZDeviceType

instances:
  - browseName: MD002
    typeDefinition: XYZDeviceType
    organizedBy: /ua:Objects
    interfaces:
      - browseName: ISerializeServiceType
        optionals:
           - Address

XML file for the above example
<?xml version="1.0"?>
<UANodeSet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:uax="http://opcfoundation.org/UA/2008/02/Types.xsd" xmlns="http://opcfoundation.org/UA/2011/03/UANodeSet.xsd" xmlns:ns1="http://sterfive.com/UA/test/Type.xsd">
    <NamespaceUris>
        <Uri>http://sterfive.com/UA/test/</Uri>
    </NamespaceUris>
    <Models>
        <Model ModelUri="http://sterfive.com/UA/test/" Version="0.0.0" PublicationDate="2020-01-01T00:00:00.000Z">
            <RequiredModel ModelUri="http://opcfoundation.org/UA/" Version="1.05.06" PublicationDate="2025-11-08T00:00:00.000Z"/>
        </Model>
    </Models>
    <Aliases>
        <Alias Alias="ByteString">i=15</Alias>
        <Alias Alias="HasComponent">i=47</Alias>
        <Alias Alias="HasInterface">i=17603</Alias>
        <Alias Alias="HasModellingRule">i=37</Alias>
        <Alias Alias="HasProperty">i=46</Alias>
        <Alias Alias="HasSubtype">i=45</Alias>
        <Alias Alias="HasTypeDefinition">i=40</Alias>
        <Alias Alias="Organizes">i=35</Alias>
        <Alias Alias="String">i=12</Alias>
    </Aliases>
<!--ReferenceTypes-->
<!--ObjectTypes-->
<!--ObjectType - 1:ISerializeServiceType {{{{ -->
    <UAObjectType NodeId="ns=1;i=1000" BrowseName="1:ISerializeServiceType">
        <DisplayName>ISerializeServiceType</DisplayName>
        <References>
            <Reference ReferenceType="HasSubtype" IsForward="false">i=17602</Reference>
            <Reference ReferenceType="HasComponent">ns=1;i=1001</Reference>
            <Reference ReferenceType="HasComponent">ns=1;i=1002</Reference>
        </References>
    </UAObjectType>
    <UAVariable NodeId="ns=1;i=1001" BrowseName="1:SerialiazedData" ParentNodeId="ns=1;i=1000" AccessLevel="3" DataType="ByteString">
        <DisplayName>SerialiazedData</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=63</Reference>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAVariable>
    <UAMethod NodeId="ns=1;i=1002" BrowseName="1:Serialize" ParentNodeId="ns=1;i=1000">
        <DisplayName>Serialize</DisplayName>
        <References>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAMethod>
<!--ObjectType - 1:ISerializeServiceType }}}}-->
<!--ObjectType - 1:ITransactionServiceType {{{{ -->
    <UAObjectType NodeId="ns=1;i=1003" BrowseName="1:ITransactionServiceType">
        <DisplayName>ITransactionServiceType</DisplayName>
        <References>
            <Reference ReferenceType="HasSubtype" IsForward="false">i=17602</Reference>
            <Reference ReferenceType="HasComponent">ns=1;i=1004</Reference>
            <Reference ReferenceType="HasComponent">ns=1;i=1005</Reference>
            <Reference ReferenceType="HasComponent">ns=1;i=1006</Reference>
        </References>
    </UAObjectType>
    <UAMethod NodeId="ns=1;i=1004" BrowseName="1:Start" ParentNodeId="ns=1;i=1003">
        <DisplayName>Start</DisplayName>
        <References>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAMethod>
    <UAMethod NodeId="ns=1;i=1005" BrowseName="1:Abort" ParentNodeId="ns=1;i=1003">
        <DisplayName>Abort</DisplayName>
        <References>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAMethod>
    <UAMethod NodeId="ns=1;i=1006" BrowseName="1:Commit" ParentNodeId="ns=1;i=1003">
        <DisplayName>Commit</DisplayName>
        <References>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAMethod>
<!--ObjectType - 1:ITransactionServiceType }}}}-->
<!--ObjectType - 1:ILocationType {{{{ -->
    <UAObjectType NodeId="ns=1;i=1007" BrowseName="1:ILocationType">
        <DisplayName>ILocationType</DisplayName>
        <References>
            <Reference ReferenceType="HasSubtype" IsForward="false">i=17602</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1008</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1009</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1010</Reference>
        </References>
    </UAObjectType>
    <UAVariable NodeId="ns=1;i=1008" BrowseName="1:GPS" ParentNodeId="ns=1;i=1007" AccessLevel="3" DataType="String">
        <DisplayName>GPS</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=68</Reference>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAVariable>
    <UAVariable NodeId="ns=1;i=1009" BrowseName="1:FloorLocation" ParentNodeId="ns=1;i=1007" AccessLevel="3" DataType="String">
        <DisplayName>FloorLocation</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=68</Reference>
            <Reference ReferenceType="HasModellingRule">i=80</Reference>
        </References>
    </UAVariable>
    <UAVariable NodeId="ns=1;i=1010" BrowseName="1:Address" ParentNodeId="ns=1;i=1007" AccessLevel="3" DataType="String">
        <DisplayName>Address</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=68</Reference>
            <Reference ReferenceType="HasModellingRule">i=80</Reference>
        </References>
    </UAVariable>
<!--ObjectType - 1:ILocationType }}}}-->
<!--ObjectType - 1:XYZDeviceType {{{{ -->
    <UAObjectType NodeId="ns=1;i=1011" BrowseName="1:XYZDeviceType">
        <DisplayName>XYZDeviceType</DisplayName>
        <References>
            <Reference ReferenceType="HasSubtype" IsForward="false">i=58</Reference>
        </References>
    </UAObjectType>
<!--ObjectType - 1:XYZDeviceType }}}}-->
<!--VariableTypes-->
<!--Other Nodes-->
<!--Object - 1:MD002 {{{{ -->
    <UAObject NodeId="ns=1;i=1012" BrowseName="1:MD002">
        <DisplayName>MD002</DisplayName>
        <References>
            <Reference ReferenceType="Organizes" IsForward="false">i=85</Reference>
            <Reference ReferenceType="HasInterface">ns=1;i=1000</Reference>
            <Reference ReferenceType="HasTypeDefinition">ns=1;i=1011</Reference>
            <Reference ReferenceType="HasComponent">ns=1;i=1013</Reference>
            <Reference ReferenceType="HasComponent">ns=1;i=1014</Reference>
        </References>
    </UAObject>
    <UAVariable NodeId="ns=1;i=1013" BrowseName="1:SerialiazedData" ParentNodeId="ns=1;i=1012" AccessLevel="3" DataType="ByteString">
        <DisplayName>SerialiazedData</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=63</Reference>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAVariable>
    <UAMethod NodeId="ns=1;i=1014" BrowseName="1:Serialize" ParentNodeId="ns=1;i=1012" MethodDeclarationId="ns=1;i=1002">
        <DisplayName>Serialize</DisplayName>
        <References>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAMethod>
<!--Object - 1:MD002 }}}} -->
</UANodeSet>

Exampme: Interface hierachy​

alt text

# yaml-language-server: $schema=./nodeset2.schema.json
namespaceUri: http://sterfive.com/UA/test/
publicationDate: "2020-01-01T00:00:00.000Z"

interfaceTypes:
  - browseName: ILevelType
    methods:
      - browseName: L1Method
    properties:
      - browseName: L1Prop
        dataType: ua:String
  - browseName: ILevel2Type
    subtypeOf: ILevelType
    properties:
      - browseName: L2Prop1
        dataType: ua:String
      - browseName: L2Prop2
        dataType: ua:String
        modellingRule: Optional
objectTypes:
  - browseName: XYZDeviceType
    interfaces:
      - browseName: ILevel2Type
    properties:
      - browseName: XYZ_Var1
        dataType: ua:String
      - browseName: XYZ_Var2
        dataType: ua:String*
        modellingRule: Optional

instances:
  - browseName: XYZInstance1
    typeDefinition: XYZDeviceType
    organizedBy: /ua:Objects
    optionals:
      - L2Prop2
      - XYZ_Var2

  # instance with mandatory only
  - browseName: XYZInstance2
    typeDefinition: XYZDeviceType
    organizedBy: /ua:Objects
XML file for the above example
<?xml version="1.0"?>
<UANodeSet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:uax="http://opcfoundation.org/UA/2008/02/Types.xsd" xmlns="http://opcfoundation.org/UA/2011/03/UANodeSet.xsd" xmlns:ns1="http://sterfive.com/UA/test/Type.xsd">
    <NamespaceUris>
        <Uri>http://sterfive.com/UA/test/</Uri>
    </NamespaceUris>
    <Models>
        <Model ModelUri="http://sterfive.com/UA/test/" Version="0.0.0" PublicationDate="2020-01-01T00:00:00.000Z">
            <RequiredModel ModelUri="http://opcfoundation.org/UA/" Version="1.05.06" PublicationDate="2025-11-08T00:00:00.000Z"/>
        </Model>
    </Models>
    <Aliases>
        <Alias Alias="HasComponent">i=47</Alias>
        <Alias Alias="HasInterface">i=17603</Alias>
        <Alias Alias="HasModellingRule">i=37</Alias>
        <Alias Alias="HasProperty">i=46</Alias>
        <Alias Alias="HasSubtype">i=45</Alias>
        <Alias Alias="HasTypeDefinition">i=40</Alias>
        <Alias Alias="Organizes">i=35</Alias>
        <Alias Alias="String">i=12</Alias>
    </Aliases>
<!--ReferenceTypes-->
<!--ObjectTypes-->
<!--ObjectType - 1:ILevelType {{{{ -->
    <UAObjectType NodeId="ns=1;i=1000" BrowseName="1:ILevelType">
        <DisplayName>ILevelType</DisplayName>
        <References>
            <Reference ReferenceType="HasSubtype" IsForward="false">i=17602</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1001</Reference>
            <Reference ReferenceType="HasComponent">ns=1;i=1002</Reference>
        </References>
    </UAObjectType>
    <UAVariable NodeId="ns=1;i=1001" BrowseName="1:L1Prop" ParentNodeId="ns=1;i=1000" AccessLevel="3" DataType="String">
        <DisplayName>L1Prop</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=68</Reference>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAVariable>
    <UAMethod NodeId="ns=1;i=1002" BrowseName="1:L1Method" ParentNodeId="ns=1;i=1000">
        <DisplayName>L1Method</DisplayName>
        <References>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAMethod>
<!--ObjectType - 1:ILevelType }}}}-->
<!--ObjectType - 1:ILevel2Type {{{{ -->
    <UAObjectType NodeId="ns=1;i=1003" BrowseName="1:ILevel2Type">
        <DisplayName>ILevel2Type</DisplayName>
        <References>
            <Reference ReferenceType="HasSubtype" IsForward="false">ns=1;i=1000</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1004</Reference>
            <Reference ReferenceType="HasProperty">ns=1;i=1005</Reference>
        </References>
    </UAObjectType>
    <UAVariable NodeId="ns=1;i=1004" BrowseName="1:L2Prop1" ParentNodeId="ns=1;i=1003" AccessLevel="3" DataType="String">
        <DisplayName>L2Prop1</DisplayName>
        <References>
            <Reference ReferenceType="HasTypeDefinition">i=68</Reference>
            <Reference ReferenceType="HasModellingRule">i=78</Reference>
        </References>
    </UAVariable>
    <UAVariable NodeId="ns=1;i=1005" BrowseName="1:L2Prop2" ParentNodeId="ns=1;i=1003" AccessLevel="3" DataType="String">
        <DisplayName>L2Prop2</DisplayName>
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