Lucence configuration index

<configuration xmlns:patch="http://www.sitecore.net/xmlconfig/">
  <sitecore>
    <contentSearch>
      <indexConfigurations>

        <!-- If no configuration is specified for an index, it uses the default configuration. The configurations are not merged if the index also has a
             configuration. The system uses either the default configuration or the index configuration. -->
        <CustomIndexConfiguration type="Sitecore.ContentSearch.LuceneProvider.LuceneIndexConfiguration, Sitecore.ContentSearch.LuceneProvider">

          <include hint="list:IncludeTemplate">
            <CustomTemplateId>{0603F166-35B8-469F-8123-E8D87BEDC171}</CustomTemplateId>
          </include>

        </CustomIndexConfiguration>

      </indexConfigurations>

    </contentSearch>
 
  </sitecore>
</configuration>