MockAction::filter_append PHP Method

    function filter_append($arg)
    {
        if ($this->debug) {
            dmp(__FUNCTION__, $this->current_filter());
        }
        $args = func_get_args();
        $this->events[] = array('filter' => __FUNCTION__, 'tag' => $this->current_filter(), 'args' => $args);
        return $arg . '_append';
    }