Sleep thread in XSLT (Delay a process by specific time)

 <?xml version="1.0" encoding="UTF-8"?>

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns:vish="http://marklogicgd.blogspot.com/xslt/vishnu" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:thread="java.lang.Thread"
    exclude-result-prefixes="xs vish thread" version="2.0">

    <xsl:variable name="millisecondsToSleep" select="7000"/>

    <xsl:variable name="startTime" select="current-time()"/>

    <xsl:function name="vish:threadSleep">
        <xsl:param name="millisecondsToSleep" as="xs:integer"/>
        <xsl:value-of select="
                thread:sleep(if ($millisecondsToSleep gt 0) then
                    $millisecondsToSleep
                else
                    1000)"/>
    </xsl:function>

    <xsl:template match="/">
        Start time: <xsl:value-of select="$startTime"/>
        <xsl:value-of select="vish:threadSleep($millisecondsToSleep)"/>
        <xsl:variable name="endTime" select="current-time()"/>
        End time: <xsl:value-of select="$endTime"/>
        TimeDifference :- <xsl:value-of select="$endTime - $startTime"/>
    </xsl:template>

</xsl:stylesheet>

Result:-

<?xml version="1.0" encoding="UTF-8"?>
    Start time: 20:36:22.393+05:30
    End time: 20:36:29.395+05:30
    TimeDifference :- PT7.002