<?xml version="1.0" encoding="utf-8" ?> 
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">

    <xs:complexType name="VarDlgInterface">
        <xs:attribute name="class" use="optional" />
        <xs:attribute name="iid" use="required" />
    </xs:complexType>

    <xs:complexType name="VarDlgPlugin">
        <xs:sequence>
            <xs:element name="vdlg-iface" type="VarDlgInterface" maxOccurs="unbounded"/>
        </xs:sequence>
        <xs:attribute name="id" use="required"/>
        <xs:attribute name="lib" use="required" />
    </xs:complexType> 

    <xs:element name="vdlg-plugin" type="VarDlgPlugin" />
</xs:schema>