Loops latest topics

<!-- Begin bbpress forum topics -->
<div class="columns seventeen">
      <div class="site_goto_center">
        <div class="margin_top4">
        </div>
        <div class="site_center_div">
          <div class="columns eight">
            <h3 class="with_line">Latest Forum Topics</h3>
<?php
$show_sep = false;

if ( 'forum' ==  bbp_get_forum_last_active_id() ) {
$breadcrumbs = '<a href="' . bbp_get_forum_permalink( $parent->ID ) . '">' . bbp_get_forum_title( $parent->ID ) . '</a>';
}

if ( $breadcrumbs ) {
?>
<ul class="square-bullets">
<?php
printf( __( '<li>Posted in %2$s ' ),'', $breadcrumbs);
$show_sep = true;
echo '</li>';
echo '</ul>';
}
?>
</div>
<!-- End bbpress forum topics -->
        </div>