A new accessor family is provided : Alias. The purpose of Alias accessors is to reduce the number of independent accessors and try to factorise accessors. With Aliases, overloading the default behaviour of aliases may become easier. For example, the method setFirstName will now invoke _setFirstName and then reindex. This way, an interaction method will only need to use _setFirstName  as trigger. If the user wants to overload _setFirstName , it becomes possible without having to overload setFirstName at the same time.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@15678 20353a03-c40f-0410-a6d1-a30d3c3de9de