function __construct()
 {
     parent::__construct();
     /*
     add_filter( WpSolrFilters::WPSOLR_FILTER_SEARCH_PAGE_SLUG, array(
     	$this,
     	'get_search_page_slug',
     ), 10, 1 );
     */
 }
<?php

/**
 * Included file to display admin options
 */
WpSolrExtensions::require_once_wpsolr_extension(WpSolrExtensions::EXTENSION_WPML, true);
WpSolrExtensions::require_once_wpsolr_extension(WpSolrExtensions::OPTION_INDEXES, true);
$extension_options_name = 'wdm_solr_extension_wpml_data';
$settings_fields_name = 'solr_extension_wpml_options';
$options = get_option($extension_options_name, array('is_extension_active' => '0'));
$is_plugin_active = WpSolrExtensions::is_plugin_active(WpSolrExtensions::EXTENSION_WPML);
$plugin_name = "WPML";
$plugin_link = "https://wpml.org/";
$plugin_version = "(WPML Multilingual CMS > 3.1.6)";
$ml_plugin = PluginWpml::create();
?>

<?php 
include_once 'template.inc.php';