SqlJobExtension.SqlJobTask.Undo C# (CSharp) Метод

        public override void Undo()
        {
            if (UndoSql != "")
            {
                EnsureConnectionIsOpen();
                ExecuteNonQuery(UndoSql);
            }
            else
            {
                throw new UndoTaskNotDefinedExcepton();
            }
        }