<element name="Packaging">
    <complexType>
        <sequence>
            <element name="ProcessingCapabilities">
                <complexType>
                    <attribute name="parse" type="boolean" use="required" />
                    <attribute name="generate" type="boolean" use="required" />
                </complexType>
            </element>
            <element name="CompositeList" maxOccurs="unbounded">
                <complexType>
                    <choice maxOccurs="unbounded">
                        <element name="Encapsulation">
                            <complexType>
                                <sequence>
                                    <element ref="tns:Constituent" />
                                </sequence>
                                <attributeGroup ref="tns:pkg.grp" />
                            </complexType>
                        </element>
                        <element name="Composite">
                            <complexType>
                                <sequence>
                                    <element ref="tns:Constituent" maxOccurs="unbounded" />
                                </sequence>
                                <attributeGroup ref="tns:pkg.grp" />
                            </complexType>
                        </element>
                    </choice>
                </complexType>
            </element>
        </sequence>
        <attribute ref="tns:id" use="required" />
    </complexType>
</element>