<xsl:stylesheet version="2.0"

                xmlns:ts="http://www.w3.org/XML/2004/xml-schema-test-suite/"

                xmlns:xlink="http://www.w3.org/1999/xlink"

                xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

    <xsl:template match="ts:testSetRef">

        <xsl:apply-templates select="document(@xlink:href)"/>

    </xsl:template>

    <!-- We make all URI references absolute. -->

    <xsl:template match="@xlink:href">

        <xsl:attribute name="xlink:href" select="resolve-uri(., base-uri())"/>

    </xsl:template>

    <xsl:template match="@*|node()">

        <xsl:copy>

            <xsl:apply-templates select="@*|node()"/>

        </xsl:copy>

    </xsl:template>

</xsl:stylesheet>