I have a <step> element that looks something like this:

<steps>

<step>

<para>Intro stuff</para>

<para>More intro stuff</para>

<figure/>

<figure/>

<para>Conclusion stuff</para>

<para>More conclusion stuff</para>

</step>

</steps>

I want 4 separate groups:

1) First two <para> elements.

2) First <figure>

3) Second <figure>

4) Last two <para> elements.

  <xsl:for-each-group select="*" group-adjacent="boolean(self::para)">
    <xsl:choose>
       <xsl:when test="current-grouping-key()">
         <group>
            <xsl:apply-templates select="current-group()"/>
         </group>
      </xsl:when>
      <xsl:otherwise>
        <xsl:for-each select="current-group()">
           <group>
              <xsl:apply-templates select="."/>
           </group>
        </xsl:for-each>
      </xsl:otherwise>
   </xsl:choose>
  </xsl:for-each-group>