human
Solve the following python programming problem given the following code:
def get_deleted_objects(objs, opts, user, admin_site, using) : 
    '
    Find all objects related to ``objs`` that should also be deleted. ``objs``
    must be a homogenous iterable of objects (e.g. a QuerySet).

    Returns a nested list of strings suitable for display in the
    template with the ``unordered_list`` filter.

    ' 
    collector = PolymorphicAwareNestedObjects (using = using) 
    collector.collect (objs) 
    perms_needed = set () 
    def format_callback(obj) : 
        has_admin = (obj.__class__ in admin_site._registry) 
        opts = obj._meta 
        if has_admin : 
            admin_url = reverse (('%s:%s_%s_change' % (admin_site.name, opts.app_label, opts.object_name.lower ())), None, (quote (obj._get_pk_val ()),)) 
            p = get_delete_permission (opts) 
            if (not user.has_perm (p)) : 
                perms_needed.add (opts.verbose_name) 
return mark_safe (('%s: <a href="%s">%s</a>' % (escape (capfirst (opts.verbose_name)), admin_url, escape (obj)))) 
else : 
            return ('%s: %s' % (capfirst (opts.verbose_name), force_text (obj))) 
to_delete = collector.nested (using) 
    protected = [format_callback (obj) for obj in collector.protected] 
    return (to_delete, perms_needed, protected) 

    
    

    Fix the buggy line: to_delete = collector.nested (using)
assistant
#Here is Python code to find all objects related to ``objs`` that should also be deleted.

to_delete = collector.nested (format_callback)