GDN version 2.1+
This filter is used in every template. You can change HTML output.
function my_get_template_part( $html, $tmpl_name, $dir){
$html = "";
if($tmpl_name == "related-post" && $dir == "blog"){
jaw_template_set_var('box_title', esc_html__('Related Posts', "gdn-theme"));
echo jaw_get_template_part('section_bar', 'simple-shortcodes');
$html .= '<div class="jaw-blog-wraper">';
$html .= "And now for some completely different";
$html .= '</div>';
}
return $html;
}
add_filter('jaw_get_template_part', 'my_get_template_part',10,3);
List of all hooks you can find HERE