nestedpages_row_parent_css_classes.php

<?php
add_filter('nestedpages_row_parent_css_classes', 'nestedpages_filter_row_css_classes', 10, 3);
/**
* Filter the <li> element css classes for nested pages rows
* @param str - $row_classes - the CSS classes for output
* @param obj - $post - the current post object
* @param obj - $post_type_object - the current post type object
*/
function nestedpages_filter_row_css_classes($row_classes, $post, $post_type_object)
{
	// Do any necessary logic here for adding the row class
	// This particular class disables nesting
	$row_classes .= ' mjs-nestedSortable-no-nesting';
	return $row_classes;
}