</xs:attributeGroup>
<xs:group name="filter_virt_db">
<xs:sequence>
+ <xs:element minOccurs="0" ref="mp:pass-vhosts"/>
<xs:element maxOccurs="unbounded" ref="mp:virtual"/>
</xs:sequence>
</xs:group>
+ <xs:element name="pass-vhosts" type="xs:boolean"/>
<xs:element name="virtual">
<xs:complexType>
<xs:sequence>