common/modules/comment/Permissions.php

<?php
    namespace common\modules\comment;
    class Permissions
    {
        const CREATE = 'artbox_comment.create';
        const UPDATE = 'artbox_comment.update';
        const DELETE = 'artbox_comment.delete';
        const UPDATE_OWN = 'artbox_comment.update_own';
        const DELETE_OWN = 'artbox_comment.delete_own';
    }