Hierarchical Custom Post Type Walker?

I’ve found a solution which works great. I ended up copying the bbPress Reply Walker class which was an extension of the WordPress walker class, and modifying some of the parameters to meet my needs. I had to also make my own function for listing replies, similar to bbPress’s list replies function. The list replies function had custom args as follows:

            $args = array(
                'post_type'           => 'reply',                   
                'post_parent'         => $postID,                   
                'posts_per_page'      => 50,                        
                'orderby'             => 'date',                        
                'order'               => 'ASC',                         
                'hierarchical'        => true,
                'ignore_sticky_posts' => true,                          
            )