File: Data.xml
<test>AAA</test>
File: Transform.xslt
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
version="1.0">
<xsl:template match="test">
<testOut>
this is a test
<xsl:apply-templates />
</testOut>
</xsl:template>
</xsl:stylesheet>
Output:
<?xml version="1.0" encoding="UTF-8"?><testOut>
this is a test
AAA</testOut>