do_action to template-builder.php

Hi,
i’ve added do_action to the template-builder.php in the child theme. Is this a clean solution? Is there a cleaner one?

LINES 100 to 103 of template-builder.php
$content = apply_filters(‘the_content’, $content);
$content = apply_filters(‘avf_template_builder_content’, $content);
$content .= do_action( ‘ava_header_attivita’ ); // new line
echo $content;