Count Nodes and Duplicate with no values in XSLT - xslt

Question

I am super rusty at XSLT and was wondering if someone can give me some pointers.
Edit: Using XSLT 1.0
Original XML:
<gic>
<application>
<agent>
...child nodes
</agent>
<client>
...child nodes
</client>
<bank>
...child nodes
</bank>
</application>
</gic>
I need to transform the given XML INPUT to have 5 client nodes. The input can contain 1-5 client nodes populated. I need to ensure there is always 5 in the output. In this case, one is provide, so I need to insert 4 client nodes with all child nodes. Values for all child nodes need to be empty. Output in XML

Answer 1

<?xml version="1.0" encoding="UTF-8"?>
<xsl:stylesheet version="2.0" xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" version="1.0" encoding="UTF-8" indent="yes"/>
<xsl:template match="/">
<xsl:apply-templates />
</xsl:template>
<xsl:template match="application" as="node()*">
<xsl:copy>
<xsl:apply-templates select="agent" />
<!-- copy existing cliens -->
<xsl:apply-templates select="client" />
<!-- add new clients -->
<xsl:call-template name="AddClients">
<xsl:with-param name="times" select="10 - count(client)" />
</xsl:call-template>
<!-- copy banks -->
<xsl:apply-templates select="bank" />
</xsl:copy>
</xsl:template>
<xsl:template name="AddClients">
<xsl:param name="times" select="1" />
<xsl:if test="number($times) > 0">
<!-- new element here -->
<xsl:element name="client">
<xsl:attribute name="a1">
<xsl:value-of select="asas" />
</xsl:attribute>
</xsl:element>
<xsl:call-template name="AddClients">
<xsl:with-param name="times" select="$times - 1" />
</xsl:call-template>
</xsl:if>
</xsl:template>
<!-- default -->
<xsl:template match="#*|node()">
<xsl:copy>
<xsl:apply-templates select="#*|node()" />
</xsl:copy>
</xsl:template>
</xsl:stylesheet>