Expired Event SearchWP query mod filter for Event Espresso

functions.php

<?php
add_filter( 'searchwp\query\mods', function( $mods, $query ) {
    global $wpdb;

    $today = new DateTime(date('Y-m-d'));
    $today = $today->format('Y-m-d H:i:s');

    // Retrieve Source name to use with Mod.
    $source = \SearchWP\Utils::get_post_type_source_name( 'espresso_events' );

    $mod = new \SearchWP\Mod( $source );

    $mod->set_local_table( EEM_Datetime::instance()->table() );
    $mod->on( 'EVT_ID', [ 'column' => 'id' ] );
    // more join filters here if necessary

    $mod->raw_where_sql( function( $runtime_mod ) use ( $wpdb, $today ) {
        return $wpdb->prepare( "{$runtime_mod->get_local_table_alias()}.DTT_EVT_end >= %s", $today );
    } );

    $mods[] = $mod;

    return $mods;
}, 10, 2 );