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// local-name() == documenttype/documenttypealias

<xsl:if test="local-name($currentPage) = 'contactItem'">

IN FOREACH LOOP:
<xsl:if test="local-name() = 'contactItem'">

</xsl:if>

<xsl:choose>
  <xsl:when test="local-name() = 'contactItem'">
    <h2> contactItem </h2>
  </xsl:when>
  <xsl:when test="local-name() = 'contactcategory'">
    <h2>contactcategory</h2>
  </xsl:when>
</xsl:choose>