SenseNet.ContentRepository.SavingAction.HasPermission C# (CSharp) Метод

        private bool HasPermission(StateAction stateAction)
        {
            if (this.Node.Id == 0)
            {
                //for new content, creator needs to have AddNew permission for the parent
                if (!this.Node.Parent.Security.HasPermission(PermissionType.AddNew))
                    return false;

                //if this is a list type, the user must have a manage container permission for the parent
                if (!CheckManageListPermission(this.Node.NodeType, this.Node.Parent))
                    return false;
            }
            else
            {
                //otherwise the user needs to have Save permission for every action
                if (!this.Node.Security.HasPermission(PermissionType.Save))
                    return false;

                //if this is a list type, the user must have a manage container permission for the node
                if (!CheckManageListPermission(this.Node.NodeType, this.Node))
                    return false;
            }

            switch (stateAction)
            {
                case StateAction.Save:
                case StateAction.CheckOut:
                case StateAction.SaveAndCheckIn:
                case StateAction.CheckIn:
                    return !IsCheckedOutByAnotherUser(this.Node);

                case StateAction.UndoCheckOut:
                    //force and 'normal' undo operations
                    return !IsCheckedOutByAnotherUser(this.Node) ||
                        HasForceUndoCheckOutRight(this.Node);

                case StateAction.Publish:
                    return this.Node.Security.HasPermission(User.Current, PermissionType.Publish) && 
                        !IsCheckedOutByAnotherUser(this.Node);

                case StateAction.Approve:
                case StateAction.Reject:
                    return this.Node.Security.HasPermission(User.Current, PermissionType.Approve); 

                default:
                    throw new NotImplementedException("Unknown StateAction: " + stateAction);
            }
        }