SharePoint : Programmatically enabling the content approval for library

//Enabling the content approval for library
                    try
                    {
                        string libraryName = "LibraryName";
                        SPList list = web.Lists[libraryName];
                        if (list != null)
                        {
                            list.EnableModeration = true;
                            list.Update();
                        }
                    }
                    catch (Exception ex)
                    {
                       //Handle the exception
                    }