public override void visit(BaseModelElement obj, bool visitSubNodes)
            {
                IExpressionable expressionable = obj as IExpressionable;
                if (expressionable != null)
                {
                    try
                    {
                        RelocateTree refactorer = new RelocateTree(BaseLocation);
                        refactorer.PerformUpdate(expressionable);
                    }
                    catch (Exception e)
                    {
                        obj.AddWarning("Cannot refactor this element, reason = " + e.Message);
                    }
                }

                base.visit(obj, visitSubNodes);
            }