<?xml version="1.0" encoding="UTF-8"?><xs:schema targetNamespace="urn:xfire:xmlbeans:nstest"  xmlns:xf="urn:xfire:xmlbeans:nstest"  xmlns:xs="http://www.w3.org/2001/XMLSchema"  elementFormDefault="qualified" attributeFormDefault="unqualified">  <xs:import namespace="urn:xfire:xmlbeans:nstest" schemaLocation="Base.xsd" />  <xs:element name="RequestText">    <xs:complexType>      <xs:complexContent>        <xs:extension base="xf:Request">          <xs:attribute name="query" type="xs:string" use="required" />        </xs:extension>      </xs:complexContent>    </xs:complexType>  </xs:element>  <xs:attribute name="foo" type="xs:string" /></xs:schema>